398981962 has 8 divisors (see below), whose sum is σ = 599298336. Its totient is φ = 199215852.

The previous prime is 398981953. The next prime is 398981981. The reversal of 398981962 is 269189893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135748 + ... + 138655.

It is an arithmetic number, because the mean of its divisors is an integer number (74912292).

Almost surely, 2^398981962 is an apocalyptic number.

398981962 is a deficient number, since it is larger than the sum of its proper divisors (200316374).

398981962 is a wasteful number, since it uses less digits than its factorization.

398981962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275132.

The product of its digits is 1679616, while the sum is 55.

The square root of 398981962 is about 19974.5328355884. The cubic root of 398981962 is about 736.1806880040.

The spelling of 398981962 in words is "three hundred ninety-eight million, nine hundred eighty-one thousand, nine hundred sixty-two".