90437855 has 16 divisors (see below), whose sum is σ = 111382560. Its totient is φ = 70468608.

The previous prime is 90437833. The next prime is 90437887. The reversal of 90437855 is 55873409.

It is not a de Polignac number, because 90437855 - 2¹⁶ = 90372319 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31979 + ... + 34691.

It is an arithmetic number, because the mean of its divisors is an integer number (6961410).

Almost surely, 2^90437855 is an apocalyptic number.

90437855 is a deficient number, since it is larger than the sum of its proper divisors (20944705).

90437855 is a wasteful number, since it uses less digits than its factorization.

90437855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 90437855 is about 9509.8819656187. The cubic root of 90437855 is about 448.8660420515.

The spelling of 90437855 in words is "ninety million, four hundred thirty-seven thousand, eight hundred fifty-five".