396999252 has 72 divisors (see below), whose sum is σ = 1114572480. Its totient is φ = 122148000.

The previous prime is 396999227. The next prime is 396999257. The reversal of 396999252 is 252999693.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396999257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7377 + ... + 29127.

Almost surely, 2^396999252 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 396999252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557286240).

396999252 is an abundant number, since it is smaller than the sum of its proper divisors (717573228).

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

396999252 is a wasteful number, since it uses less digits than its factorization.

396999252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21790 (or 21769 counting only the distinct ones).

The product of its digits is 2361960, while the sum is 54.

The square root of 396999252 is about 19924.8400746405. The cubic root of 396999252 is about 734.9591980682.

The spelling of 396999252 in words is "three hundred ninety-six million, nine hundred ninety-nine thousand, two hundred fifty-two".