87404402 has 8 divisors (see below), whose sum is σ = 131202396. Its totient is φ = 43670272.

The previous prime is 87404377. The next prime is 87404417. The reversal of 87404402 is 20440478.

It can be written as a sum of positive squares in 2 ways, for example, as 78872161 + 8532241 = 8881^2 + 2921^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12383 + ... + 18114.

Almost surely, 2^87404402 is an apocalyptic number.

87404402 is a deficient number, since it is larger than the sum of its proper divisors (43797994).

87404402 is a wasteful number, since it uses less digits than its factorization.

87404402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31932.

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 87404402 is about 9349.0321424199. The cubic root of 87404402 is about 443.7902622464.

The spelling of 87404402 in words is "eighty-seven million, four hundred four thousand, four hundred two".