397087488 has 288 divisors, whose sum is σ = 1393190400. Its totient is φ = 109154304.

The previous prime is 397087487. The next prime is 397087507. The reversal of 397087488 is 884780793.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is not an unprimeable number, because it can be changed into a prime (397087487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1402995 + ... + 1403277.

Almost surely, 2^397087488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397087488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696595200).

397087488 is an abundant number, since it is smaller than the sum of its proper divisors (996102912).

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

397087488 is a wasteful number, since it uses less digits than its factorization.

397087488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The square root of 397087488 is about 19927.0541726568. The cubic root of 397087488 is about 735.0136440616.

The spelling of 397087488 in words is "three hundred ninety-seven million, eighty-seven thousand, four hundred eighty-eight".