398492812 has 12 divisors (see below), whose sum is σ = 716210320. Its totient is φ = 193861296.

The previous prime is 398492807. The next prime is 398492813. The reversal of 398492812 is 218294893.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (398492813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1346112 + ... + 1346407.

Almost surely, 2^398492812 is an apocalyptic number.

It is an amenable number.

398492812 is a deficient number, since it is larger than the sum of its proper divisors (317717508).

398492812 is a wasteful number, since it uses less digits than its factorization.

398492812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692560 (or 2692558 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 398492812 is about 19962.2847389771. The cubic root of 398492812 is about 735.8797136245.

The spelling of 398492812 in words is "three hundred ninety-eight million, four hundred ninety-two thousand, eight hundred twelve".