398940024 has 32 divisors (see below), whose sum is σ = 1139829120. Its totient is φ = 113982816.

The previous prime is 398940019. The next prime is 398940029. The reversal of 398940024 is 420049893.

It is an interprime number because it is at equal distance from previous prime (398940019) and next prime (398940029).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398940029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1187154 + ... + 1187489.

It is an arithmetic number, because the mean of its divisors is an integer number (35619660).

Almost surely, 2^398940024 is an apocalyptic number.

It is an amenable number.

398940024 is an abundant number, since it is smaller than the sum of its proper divisors (740889096).

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

398940024 is a wasteful number, since it uses less digits than its factorization.

398940024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374659 (or 2374655 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 398940024 is about 19973.4830212459. The cubic root of 398940024 is about 736.1548931641.

The spelling of 398940024 in words is "three hundred ninety-eight million, nine hundred forty thousand, twenty-four".