438090855 has 16 divisors (see below), whose sum is σ = 706299264. Its totient is φ = 231863840.

The previous prime is 438090797. The next prime is 438090869. The reversal of 438090855 is 558090834.

It is not a de Polignac number, because 438090855 - 2⁷ = 438090727 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, 109509 + ... + 113438.

It is an arithmetic number, because the mean of its divisors is an integer number (44143704).

Almost surely, 2^438090855 is an apocalyptic number.

438090855 is a deficient number, since it is larger than the sum of its proper divisors (268208409).

438090855 is a wasteful number, since it uses less digits than its factorization.

438090855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223086.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 438090855 is about 20930.6200338165. The cubic root of 438090855 is about 759.4888385280.

The spelling of 438090855 in words is "four hundred thirty-eight million, ninety thousand, eight hundred fifty-five".