398907 has 12 divisors (see below), whose sum is σ = 582400. Its totient is φ = 263088.

The previous prime is 398903. The next prime is 398917. The reversal of 398907 is 709893.

It is not a de Polignac number, because 398907 - 2² = 398903 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398907.

It is not an unprimeable number, because it can be changed into a prime (398903) 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, 969 + ... + 1317.

2³⁹⁸⁹⁰⁷ is an apocalyptic number.

398907 is a deficient number, since it is larger than the sum of its proper divisors (183493).

398907 is a wasteful number, since it uses less digits than its factorization.

398907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 398907 is about 631.5908485721. The cubic root of 398907 is about 73.6134579793.

The spelling of 398907 in words is "three hundred ninety-eight thousand, nine hundred seven".