398738675 has 12 divisors (see below), whose sum is σ = 500697120. Its totient is φ = 314951520.

The previous prime is 398738651. The next prime is 398738729. The reversal of 398738675 is 576837893.

It is a happy number.

It is not a de Polignac number, because 398738675 - 2⁶ = 398738611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 398738675.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98972 + ... + 102921.

It is an arithmetic number, because the mean of its divisors is an integer number (41724760).

Almost surely, 2^398738675 is an apocalyptic number.

398738675 is a deficient number, since it is larger than the sum of its proper divisors (101958445).

398738675 is a wasteful number, since it uses less digits than its factorization.

398738675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201982 (or 201977 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 56.

The square root of 398738675 is about 19968.4419772801. The cubic root of 398738675 is about 736.0310240890.

The spelling of 398738675 in words is "three hundred ninety-eight million, seven hundred thirty-eight thousand, six hundred seventy-five".