396252181 has 8 divisors (see below), whose sum is σ = 436657760. Its totient is φ = 357264432.

The previous prime is 396252179. The next prime is 396252187. The reversal of 396252181 is 181252693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 396252181 - 2¹ = 396252179 is a prime.

It is a super-2 number, since 2×396252181² = 314031581894513522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 396252181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396252187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353871 + ... + 354988.

It is an arithmetic number, because the mean of its divisors is an integer number (54582220).

Almost surely, 2^396252181 is an apocalyptic number.

It is an amenable number.

396252181 is a deficient number, since it is larger than the sum of its proper divisors (40405579).

396252181 is a wasteful number, since it uses less digits than its factorization.

396252181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708915.

The product of its digits is 25920, while the sum is 37.

The square root of 396252181 is about 19906.0840197162. The cubic root of 396252181 is about 734.4978945342.

The spelling of 396252181 in words is "three hundred ninety-six million, two hundred fifty-two thousand, one hundred eighty-one".