398624975 has 12 divisors (see below), whose sum is σ = 564908784. Its totient is φ = 273342720.

The previous prime is 398624957. The next prime is 398624987. The reversal of 398624975 is 579426893.

It is a happy number.

It is not a de Polignac number, because 398624975 - 2⁶ = 398624911 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1138754 + ... + 1139103.

It is an arithmetic number, because the mean of its divisors is an integer number (47075732).

Almost surely, 2^398624975 is an apocalyptic number.

398624975 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

398624975 is a deficient number, since it is larger than the sum of its proper divisors (166283809).

398624975 is a wasteful number, since it uses less digits than its factorization.

398624975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277874 (or 2277869 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 53.

The square root of 398624975 is about 19965.5947820244. The cubic root of 398624975 is about 735.9610578945.

The spelling of 398624975 in words is "three hundred ninety-eight million, six hundred twenty-four thousand, nine hundred seventy-five".