438990688 has 12 divisors (see below), whose sum is σ = 864262980. Its totient is φ = 219495328.

The previous prime is 438990637. The next prime is 438990701. The reversal of 438990688 is 886099834.

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, 6859198 + ... + 6859261.

It is an arithmetic number, because the mean of its divisors is an integer number (72021915).

Almost surely, 2^438990688 is an apocalyptic number.

It is an amenable number.

438990688 is a deficient number, since it is larger than the sum of its proper divisors (425272292).

438990688 is a wasteful number, since it uses less digits than its factorization.

438990688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13718469 (or 13718461 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 55.

The square root of 438990688 is about 20952.1046198228. The cubic root of 438990688 is about 760.0084763598.

The spelling of 438990688 in words is "four hundred thirty-eight million, nine hundred ninety thousand, six hundred eighty-eight".