397024081 has 4 divisors (see below), whose sum is σ = 398202532. Its totient is φ = 395845632.

The previous prime is 397024079. The next prime is 397024093. The reversal of 397024081 is 180420793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28998225 + 368025856 = 5385^2 + 19184^2 .

It is a cyclic number.

It is not a de Polignac number, because 397024081 - 2¹ = 397024079 is a prime.

It is a super-2 number, since 2×397024081² = 315256241787789122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397024021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588720 + ... + 589393.

It is an arithmetic number, because the mean of its divisors is an integer number (99550633).

Almost surely, 2^397024081 is an apocalyptic number.

It is an amenable number.

397024081 is a deficient number, since it is larger than the sum of its proper divisors (1178451).

397024081 is a wasteful number, since it uses less digits than its factorization.

397024081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178450.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 397024081 is about 19925.4631313804. The cubic root of 397024081 is about 734.9745196097.

The spelling of 397024081 in words is "three hundred ninety-seven million, twenty-four thousand, eighty-one".