396570381 has 8 divisors (see below), whose sum is σ = 541057440. Its totient is φ = 258231792.

The previous prime is 396570379. The next prime is 396570469. The reversal of 396570381 is 183075693.

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

It is not a de Polignac number, because 396570381 - 2¹ = 396570379 is a prime.

It is a super-2 number, since 2×396570381² = 314536134172970322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396570341) 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, 1536966 + ... + 1537223.

It is an arithmetic number, because the mean of its divisors is an integer number (67632180).

Almost surely, 2^396570381 is an apocalyptic number.

It is an amenable number.

396570381 is a deficient number, since it is larger than the sum of its proper divisors (144487059).

396570381 is a wasteful number, since it uses less digits than its factorization.

396570381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3074235.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 396570381 is about 19914.0749471322. The cubic root of 396570381 is about 734.6944484032.

The spelling of 396570381 in words is "three hundred ninety-six million, five hundred seventy thousand, three hundred eighty-one".