397902960 has 240 divisors, whose sum is σ = 1644936384. Its totient is φ = 83939328.

The previous prime is 397902943. The next prime is 397902971. The reversal of 397902960 is 69209793.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62484 + ... + 68556.

Almost surely, 2^397902960 is an apocalyptic number.

397902960 is a gapful number since it is divisible by the number (30) 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 397902960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (822468192).

397902960 is an abundant number, since it is smaller than the sum of its proper divisors (1247033424).

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

397902960 is a wasteful number, since it uses less digits than its factorization.

397902960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6112 (or 6103 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 397902960 is about 19947.5051071556. The cubic root of 397902960 is about 735.5164494698.

The spelling of 397902960 in words is "three hundred ninety-seven million, nine hundred two thousand, nine hundred sixty".