398599492 has 6 divisors (see below), whose sum is σ = 697549118. Its totient is φ = 199299744.

The previous prime is 398599471. The next prime is 398599507. The reversal of 398599492 is 294995893.

It can be written as a sum of positive squares in only one way, i.e., 364657216 + 33942276 = 19096^2 + 5826^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49824933 + ... + 49824940.

Almost surely, 2^398599492 is an apocalyptic number.

It is an amenable number.

398599492 is a deficient number, since it is larger than the sum of its proper divisors (298949626).

398599492 is a wasteful number, since it uses less digits than its factorization.

398599492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99649877 (or 99649875 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 58.

The square root of 398599492 is about 19964.9565990012. The cubic root of 398599492 is about 735.9453749038.

The spelling of 398599492 in words is "three hundred ninety-eight million, five hundred ninety-nine thousand, four hundred ninety-two".