87437929 has 6 divisors (see below), whose sum is σ = 90557870. Its totient is φ = 84422016.

The previous prime is 87437899. The next prime is 87437951. The reversal of 87437929 is 92973478.

It can be written as a sum of positive squares in 3 ways, for example, as 9909904 + 77528025 = 3148^2 + 8805^2 .

It is not a de Polignac number, because 87437929 - 2¹⁹ = 86913641 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87437029) 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 5 ways as a sum of consecutive naturals, for example, 51144 + ... + 52825.

Almost surely, 2^87437929 is an apocalyptic number.

It is an amenable number.

87437929 is a deficient number, since it is larger than the sum of its proper divisors (3119941).

87437929 is a wasteful number, since it uses less digits than its factorization.

87437929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104027 (or 103998 counting only the distinct ones).

The product of its digits is 762048, while the sum is 49.

The square root of 87437929 is about 9350.8250438130. The cubic root of 87437929 is about 443.8469987255.

The spelling of 87437929 in words is "eighty-seven million, four hundred thirty-seven thousand, nine hundred twenty-nine".