87904361 has 4 divisors (see below), whose sum is σ = 88004352. Its totient is φ = 87804372.

The previous prime is 87904357. The next prime is 87904363. The reversal of 87904361 is 16340978.

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 87904361 - 2² = 87904357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87904363) 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, 48665 + ... + 50438.

It is an arithmetic number, because the mean of its divisors is an integer number (22001088).

Almost surely, 2^87904361 is an apocalyptic number.

It is an amenable number.

87904361 is a deficient number, since it is larger than the sum of its proper divisors (99991).

87904361 is an equidigital number, since it uses as much as digits as its factorization.

87904361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99990.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 87904361 is about 9375.7325580458. The cubic root of 87904361 is about 444.6348239224.

The spelling of 87904361 in words is "eighty-seven million, nine hundred four thousand, three hundred sixty-one".