398637382 has 16 divisors (see below), whose sum is σ = 702494352. Its totient is φ = 167260320.

The previous prime is 398637367. The next prime is 398637389. The reversal of 398637382 is 283736893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398637389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696633 + ... + 697204.

It is an arithmetic number, because the mean of its divisors is an integer number (43905897).

Almost surely, 2^398637382 is an apocalyptic number.

398637382 is a deficient number, since it is larger than the sum of its proper divisors (303856970).

398637382 is a wasteful number, since it uses less digits than its factorization.

398637382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393863.

The product of its digits is 1306368, while the sum is 49.

The square root of 398637382 is about 19965.9054891082. The cubic root of 398637382 is about 735.9686932867.

The spelling of 398637382 in words is "three hundred ninety-eight million, six hundred thirty-seven thousand, three hundred eighty-two".