397043608 has 64 divisors (see below), whose sum is σ = 856800000. Its totient is φ = 170957952.

The previous prime is 397043593. The next prime is 397043663. The reversal of 397043608 is 806340793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130893 + ... + 133891.

It is an arithmetic number, because the mean of its divisors is an integer number (13387500).

Almost surely, 2^397043608 is an apocalyptic number.

397043608 is a gapful number since it is divisible by the number (38) 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 397043608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428400000).

397043608 is an abundant number, since it is smaller than the sum of its proper divisors (459756392).

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

397043608 is a wasteful number, since it uses less digits than its factorization.

397043608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104 (or 3100 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 397043608 is about 19925.9531265132. The cubic root of 397043608 is about 734.9865689310.

The spelling of 397043608 in words is "three hundred ninety-seven million, forty-three thousand, six hundred eight".