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29441989 = 293492909
BaseRepresentation
bin111000001001…
…1111111000101
32001101210211001
41300103333011
530014120424
62531013301
7505152463
oct160237705
961353731
1029441989
111568a225
129a3a231
13613acc5
143ca5833
1528b8844
hex1c13fc5

29441989 has 8 divisors (see below), whose sum is σ = 30555000. Its totient is φ = 28335552.

The previous prime is 29441987. The next prime is 29442019. The reversal of 29441989 is 98914492.

It can be written as a sum of positive squares in 4 ways, for example, as 13176900 + 16265089 = 3630^2 + 4033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29441989 - 21 = 29441987 is a prime.

It is a super-2 number, since 2×294419892 = 1733661432552242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29441981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8667 + ... + 11575.

It is an arithmetic number, because the mean of its divisors is an integer number (3819375).

Almost surely, 229441989 is an apocalyptic number.

29441989 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

29441989 is a deficient number, since it is larger than the sum of its proper divisors (1113011).

29441989 is a wasteful number, since it uses less digits than its factorization.

29441989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287.

The product of its digits is 186624, while the sum is 46.

The square root of 29441989 is about 5426.0472721863. The cubic root of 29441989 is about 308.7846588093.

The spelling of 29441989 in words is "twenty-nine million, four hundred forty-one thousand, nine hundred eighty-nine".

Divisors: 1 29 349 2909 10121 84361 1015241 29441989