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87429001 = 117948091
BaseRepresentation
bin1010011011000…
…00111110001001
320002111212001011
411031200332021
5134340212001
612401523521
72111064022
oct515407611
9202455034
1087429001
1145395780
12253435a1
131516194a
14b87bc49
157a1ed51
hex5360f89

87429001 has 4 divisors (see below), whose sum is σ = 95377104. Its totient is φ = 79480900.

The previous prime is 87428989. The next prime is 87429029. The reversal of 87429001 is 10092478.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87429001 - 25 = 87428969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87429031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3974035 + ... + 3974056.

It is an arithmetic number, because the mean of its divisors is an integer number (23844276).

Almost surely, 287429001 is an apocalyptic number.

It is an amenable number.

87429001 is a deficient number, since it is larger than the sum of its proper divisors (7948103).

87429001 is a wasteful number, since it uses less digits than its factorization.

87429001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7948102.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 87429001 is about 9350.3476405960. The cubic root of 87429001 is about 443.8318916245.

The spelling of 87429001 in words is "eighty-seven million, four hundred twenty-nine thousand, one".

Divisors: 1 11 7948091 87429001