398708896356 has 27 divisors (see below), whose sum is σ = 1007857064851. Its totient is φ = 132901702584.

The previous prime is 398708896349. The next prime is 398708896379. The reversal of 398708896356 is 653698807893.

The square root of 398708896356 is 631434.

It is a perfect power (a square), and thus also a powerful number.

398708896356 is a `hidden beast` number, since 39 + 87 + 0 + 88 + 96 + 356 = 666.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3735985 + ... + 3841223.

Almost surely, 2^398708896356 is an apocalyptic number.

398708896356 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

398708896356 is the 631434-th square number.

It is an amenable number.

398708896356 is an abundant number, since it is smaller than the sum of its proper divisors (609148168495).

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

398708896356 is an frugal number, since it uses more digits than its factorization.

398708896356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210488 (or 105244 counting only the distinct ones).

The product of its (nonzero) digits is 470292480, while the sum is 72.

The spelling of 398708896356 in words is "three hundred ninety-eight billion, seven hundred eight million, eight hundred ninety-six thousand, three hundred fifty-six".