438805881 has 12 divisors (see below), whose sum is σ = 634483200. Its totient is φ = 292236120.

The previous prime is 438805859. The next prime is 438805897. The reversal of 438805881 is 188508834.

It is not a de Polignac number, because 438805881 - 2⁹ = 438805369 is a prime.

It is a super-2 number, since 2×438805881² = 385101202400372322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (438805831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15681 + ... + 33518.

It is an arithmetic number, because the mean of its divisors is an integer number (52873600).

Almost surely, 2^438805881 is an apocalyptic number.

It is an amenable number.

438805881 is a deficient number, since it is larger than the sum of its proper divisors (195677319).

438805881 is a wasteful number, since it uses less digits than its factorization.

438805881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50196 (or 50193 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The square root of 438805881 is about 20947.6939303590. The cubic root of 438805881 is about 759.9018115302.

The spelling of 438805881 in words is "four hundred thirty-eight million, eight hundred five thousand, eight hundred eighty-one".