438734491 has 12 divisors (see below), whose sum is σ = 498664992. Its totient is φ = 383666544.

The previous prime is 438734447. The next prime is 438734497. The reversal of 438734491 is 194437834.

It is not a de Polignac number, because 438734491 - 2¹¹ = 438732443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438734497) 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, 42051 + ... + 51436.

It is an arithmetic number, because the mean of its divisors is an integer number (41555416).

Almost surely, 2^438734491 is an apocalyptic number.

438734491 is a deficient number, since it is larger than the sum of its proper divisors (59930501).

438734491 is a wasteful number, since it uses less digits than its factorization.

438734491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93538 (or 93519 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 438734491 is about 20945.9898548624. The cubic root of 438734491 is about 759.8605994325.

The spelling of 438734491 in words is "four hundred thirty-eight million, seven hundred thirty-four thousand, four hundred ninety-one".