438856172 has 6 divisors (see below), whose sum is σ = 767998308. Its totient is φ = 219428084.

The previous prime is 438856141. The next prime is 438856189. The reversal of 438856172 is 271658834.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54857018 + ... + 54857025.

It is an arithmetic number, because the mean of its divisors is an integer number (127999718).

Almost surely, 2^438856172 is an apocalyptic number.

It is an amenable number.

438856172 is a deficient number, since it is larger than the sum of its proper divisors (329142136).

438856172 is a wasteful number, since it uses less digits than its factorization.

438856172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109714047 (or 109714045 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 438856172 is about 20948.8942906302. The cubic root of 438856172 is about 759.9308408905.

The spelling of 438856172 in words is "four hundred thirty-eight million, eight hundred fifty-six thousand, one hundred seventy-two".