398785696 has 12 divisors (see below), whose sum is σ = 785109402. Its totient is φ = 199392832.

The previous prime is 398785691. The next prime is 398785729. The reversal of 398785696 is 696587893.

It can be written as a sum of positive squares in only one way, i.e., 355699600 + 43086096 = 18860^2 + 6564^2 .

It is not an unprimeable number, because it can be changed into a prime (398785691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6230995 + ... + 6231058.

Almost surely, 2^398785696 is an apocalyptic number.

It is an amenable number.

398785696 is a deficient number, since it is larger than the sum of its proper divisors (386323706).

398785696 is a wasteful number, since it uses less digits than its factorization.

398785696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12462063 (or 12462055 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 61.

The square root of 398785696 is about 19969.6193253652. The cubic root of 398785696 is about 736.0599549458.

The spelling of 398785696 in words is "three hundred ninety-eight million, seven hundred eighty-five thousand, six hundred ninety-six".