397741982 has 8 divisors (see below), whose sum is σ = 650850552. Its totient is φ = 180791800.

The previous prime is 397741973. The next prime is 397741999. The reversal of 397741982 is 289147793.

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

It is a self number, because there is not a number n which added to its sum of digits gives 397741982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9039569 + ... + 9039612.

It is an arithmetic number, because the mean of its divisors is an integer number (81356319).

Almost surely, 2^397741982 is an apocalyptic number.

397741982 is a deficient number, since it is larger than the sum of its proper divisors (253108570).

397741982 is a wasteful number, since it uses less digits than its factorization.

397741982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18079194.

The product of its digits is 762048, while the sum is 50.

The square root of 397741982 is about 19943.4696580109. The cubic root of 397741982 is about 735.4172477803.

The spelling of 397741982 in words is "three hundred ninety-seven million, seven hundred forty-one thousand, nine hundred eighty-two".