397679282 has 32 divisors (see below), whose sum is σ = 800924544. Its totient is φ = 143020800.

The previous prime is 397679281. The next prime is 397679287. The reversal of 397679282 is 282976793.

It is a super-2 number, since 2×397679282² = 316297622664071048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397679281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97319 + ... + 101322.

It is an arithmetic number, because the mean of its divisors is an integer number (25028892).

Almost surely, 2^397679282 is an apocalyptic number.

397679282 is an abundant number, since it is smaller than the sum of its proper divisors (403245262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397679282 is a wasteful number, since it uses less digits than its factorization.

397679282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198674.

The product of its digits is 2286144, while the sum is 53.

The square root of 397679282 is about 19941.8976529316. The cubic root of 397679282 is about 735.3786020529.

The spelling of 397679282 in words is "three hundred ninety-seven million, six hundred seventy-nine thousand, two hundred eighty-two".