87404438 has 16 divisors (see below), whose sum is σ = 147640320. Its totient is φ = 38447400.

The previous prime is 87404437. The next prime is 87404441. The reversal of 87404438 is 83440478.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87404431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63398 + ... + 64761.

It is an arithmetic number, because the mean of its divisors is an integer number (9227520).

Almost surely, 2^87404438 is an apocalyptic number.

87404438 is a deficient number, since it is larger than the sum of its proper divisors (60235882).

87404438 is a wasteful number, since it uses less digits than its factorization.

87404438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128203.

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 87404438 is about 9349.0340677527. The cubic root of 87404438 is about 443.7903231757.

The spelling of 87404438 in words is "eighty-seven million, four hundred four thousand, four hundred thirty-eight".