438166998 has 12 divisors (see below), whose sum is σ = 949361868. Its totient is φ = 146055660.

The previous prime is 438166979. The next prime is 438167011. The reversal of 438166998 is 899661834.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12171288 + ... + 12171323.

It is an arithmetic number, because the mean of its divisors is an integer number (79113489).

Almost surely, 2^438166998 is an apocalyptic number.

438166998 is an abundant number, since it is smaller than the sum of its proper divisors (511194870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438166998 is a wasteful number, since it uses less digits than its factorization.

438166998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24342619 (or 24342616 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 438166998 is about 20932.4388927807. The cubic root of 438166998 is about 759.5328373226.

The spelling of 438166998 in words is "four hundred thirty-eight million, one hundred sixty-six thousand, nine hundred ninety-eight".