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29919 = 39973
BaseRepresentation
bin111010011011111
31112001010
413103133
51424134
6350303
7153141
oct72337
945033
1029919
112052a
1215393
1310806
14ac91
158ce9
hex74df

29919 has 4 divisors (see below), whose sum is σ = 39896. Its totient is φ = 19944.

The previous prime is 29917. The next prime is 29921. The reversal of 29919 is 91992.

29919 = T77 + T78 + ... + T85.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (29917) and next prime (29921).

It is not a de Polignac number, because 29919 - 21 = 29917 is a prime.

It is a super-2 number, since 2×299192 = 1790293122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4984 + ... + 4989.

It is an arithmetic number, because the mean of its divisors is an integer number (9974).

229919 is an apocalyptic number.

29919 is a deficient number, since it is larger than the sum of its proper divisors (9977).

29919 is an equidigital number, since it uses as much as digits as its factorization.

29919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9976.

The product of its digits is 1458, while the sum is 30.

The square root of 29919 is about 172.9710958513. The cubic root of 29919 is about 31.0443347606.

The spelling of 29919 in words is "twenty-nine thousand, nine hundred nineteen".

Divisors: 1 3 9973 29919