438749854 has 4 divisors (see below), whose sum is σ = 658124784. Its totient is φ = 219374926.

The previous prime is 438749837. The next prime is 438749867. The reversal of 438749854 is 458947834.

It is a semiprime because it is the product of two primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109687462 + ... + 109687465.

It is an arithmetic number, because the mean of its divisors is an integer number (164531196).

Almost surely, 2^438749854 is an apocalyptic number.

438749854 is a deficient number, since it is larger than the sum of its proper divisors (219374930).

438749854 is a wasteful number, since it uses less digits than its factorization.

438749854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219374929.

The product of its digits is 3870720, while the sum is 52.

The square root of 438749854 is about 20946.3565805607. The cubic root of 438749854 is about 759.8694685795.

The spelling of 438749854 in words is "four hundred thirty-eight million, seven hundred forty-nine thousand, eight hundred fifty-four".