396492161 has 8 divisors (see below), whose sum is σ = 427584360. Its totient is φ = 365484672.

The previous prime is 396492149. The next prime is 396492169. The reversal of 396492161 is 161294693.

It can be written as a sum of positive squares in 4 ways, for example, as 208253761 + 188238400 = 14431^2 + 13720^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396492161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396492169) 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, 11276 + ... + 30333.

It is an arithmetic number, because the mean of its divisors is an integer number (53448045).

Almost surely, 2^396492161 is an apocalyptic number.

It is an amenable number.

396492161 is a deficient number, since it is larger than the sum of its proper divisors (31092199).

396492161 is a wasteful number, since it uses less digits than its factorization.

396492161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42355.

The product of its digits is 69984, while the sum is 41.

The square root of 396492161 is about 19912.1109127084. The cubic root of 396492161 is about 734.6461412331.

The spelling of 396492161 in words is "three hundred ninety-six million, four hundred ninety-two thousand, one hundred sixty-one".