398760677 has 12 divisors (see below), whose sum is σ = 465903180. Its totient is φ = 340292736.

The previous prime is 398760667. The next prime is 398760679. The reversal of 398760677 is 776067893.

It can be written as a sum of positive squares in 2 ways, for example, as 351412516 + 47348161 = 18746^2 + 6881^2 .

It is not a de Polignac number, because 398760677 - 2²⁰ = 397712101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398760679) 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, 6548 + ... + 28989.

It is an arithmetic number, because the mean of its divisors is an integer number (38825265).

Almost surely, 2^398760677 is an apocalyptic number.

It is an amenable number.

398760677 is a deficient number, since it is larger than the sum of its proper divisors (67142503).

398760677 is a wasteful number, since it uses less digits than its factorization.

398760677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35780 (or 35773 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 53.

The square root of 398760677 is about 19968.9928889766. The cubic root of 398760677 is about 736.0445616578.

The spelling of 398760677 in words is "three hundred ninety-eight million, seven hundred sixty thousand, six hundred seventy-seven".