398893401 has 12 divisors (see below), whose sum is σ = 577754112. Its totient is φ = 265202136.

The previous prime is 398893381. The next prime is 398893403. The reversal of 398893401 is 104398893.

It is not a de Polignac number, because 398893401 - 2⁷ = 398893273 is a prime.

It is a super-2 number, since 2×398893401² = 318231890722693602, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (398893403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57081 + ... + 63686.

It is an arithmetic number, because the mean of its divisors is an integer number (48146176).

Almost surely, 2^398893401 is an apocalyptic number.

It is an amenable number.

398893401 is a deficient number, since it is larger than the sum of its proper divisors (178860711).

398893401 is a wasteful number, since it uses less digits than its factorization.

398893401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121140 (or 121137 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 398893401 is about 19972.3158647163. The cubic root of 398893401 is about 736.1262145953.

The spelling of 398893401 in words is "three hundred ninety-eight million, eight hundred ninety-three thousand, four hundred one".