87436929 has 4 divisors (see below), whose sum is σ = 116582576. Its totient is φ = 58291284.

The previous prime is 87436927. The next prime is 87436981. The reversal of 87436929 is 92963478.

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 not a de Polignac number, because 87436929 - 2¹ = 87436927 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87436927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14572819 + ... + 14572824.

It is an arithmetic number, because the mean of its divisors is an integer number (29145644).

Almost surely, 2^87436929 is an apocalyptic number.

It is an amenable number.

87436929 is a deficient number, since it is larger than the sum of its proper divisors (29145647).

87436929 is a wasteful number, since it uses less digits than its factorization.

87436929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29145646.

The product of its digits is 653184, while the sum is 48.

The square root of 87436929 is about 9350.7715724426. The cubic root of 87436929 is about 443.8453066731.

The spelling of 87436929 in words is "eighty-seven million, four hundred thirty-six thousand, nine hundred twenty-nine".