398903732 has 12 divisors (see below), whose sum is σ = 698251680. Its totient is φ = 199403256.

The previous prime is 398903717. The next prime is 398903737. The reversal of 398903732 is 237309893.

It is a hoax number, since the sum of its digits (44) 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 (398903737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11369 + ... + 30447.

It is an arithmetic number, because the mean of its divisors is an integer number (58187640).

Almost surely, 2^398903732 is an apocalyptic number.

It is an amenable number.

398903732 is a deficient number, since it is larger than the sum of its proper divisors (299347948).

398903732 is a wasteful number, since it uses less digits than its factorization.

398903732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24310 (or 24308 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 398903732 is about 19972.5744960433. The cubic root of 398903732 is about 736.1325695549.

The spelling of 398903732 in words is "three hundred ninety-eight million, nine hundred three thousand, seven hundred thirty-two".