396166771 has 32 divisors (see below), whose sum is σ = 535643136. Its totient is φ = 282960000.

The previous prime is 396166717. The next prime is 396166817. The reversal of 396166771 is 177661693.

It is a cyclic number.

It is not a de Polignac number, because 396166771 - 2⁷ = 396166643 is a prime.

It is a super-2 number, since 2×396166771² = 313896220889132882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (396166711) 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, 149841 + ... + 152461.

It is an arithmetic number, because the mean of its divisors is an integer number (16738848).

Almost surely, 2^396166771 is an apocalyptic number.

396166771 is a deficient number, since it is larger than the sum of its proper divisors (139476365).

396166771 is a wasteful number, since it uses less digits than its factorization.

396166771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803.

The product of its digits is 285768, while the sum is 46.

The square root of 396166771 is about 19903.9385800901. The cubic root of 396166771 is about 734.4451184016.

The spelling of 396166771 in words is "three hundred ninety-six million, one hundred sixty-six thousand, seven hundred seventy-one".