438331772 has 12 divisors (see below), whose sum is σ = 767625936. Its totient is φ = 219010080.

The previous prime is 438331771. The next prime is 438331807. The reversal of 438331772 is 277133834.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438331771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32504 + ... + 43967.

It is an arithmetic number, because the mean of its divisors is an integer number (63968828).

Almost surely, 2^438331772 is an apocalyptic number.

It is an amenable number.

438331772 is a deficient number, since it is larger than the sum of its proper divisors (329294164).

438331772 is a wasteful number, since it uses less digits than its factorization.

438331772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77908 (or 77906 counting only the distinct ones).

The product of its digits is 84672, while the sum is 38.

The square root of 438331772 is about 20936.3743757127. The cubic root of 438331772 is about 759.6280335832.

The spelling of 438331772 in words is "four hundred thirty-eight million, three hundred thirty-one thousand, seven hundred seventy-two".