397709676 has 360 divisors, whose sum is σ = 1362626496. Its totient is φ = 100154880.

The previous prime is 397709657. The next prime is 397709681. The reversal of 397709676 is 676907793.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 8461885 + ... + 8461931.

Almost surely, 2^397709676 is an apocalyptic number.

397709676 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397709676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (681313248).

397709676 is an abundant number, since it is smaller than the sum of its proper divisors (964916820).

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

397709676 is a wasteful number, since it uses less digits than its factorization.

397709676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 3000564, while the sum is 54.

The square root of 397709676 is about 19942.6597022564. The cubic root of 397709676 is about 735.3973361844.

The spelling of 397709676 in words is "three hundred ninety-seven million, seven hundred nine thousand, six hundred seventy-six".