398023146 has 40 divisors (see below), whose sum is σ = 893263140. Its totient is φ = 132466752.

The previous prime is 398023127. The next prime is 398023151. The reversal of 398023146 is 641320893.

It can be written as a sum of positive squares in 2 ways, for example, as 335439225 + 62583921 = 18315^2 + 7911^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 398023146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 129540 + ... + 132576.

Almost surely, 2^398023146 is an apocalyptic number.

398023146 is an abundant number, since it is smaller than the sum of its proper divisors (495239994).

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

398023146 is a wasteful number, since it uses less digits than its factorization.

398023146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860 (or 3851 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 398023146 is about 19950.5174368987. The cubic root of 398023146 is about 735.5904959000.

The spelling of 398023146 in words is "three hundred ninety-eight million, twenty-three thousand, one hundred forty-six".