396045971 has 4 divisors (see below), whose sum is σ = 398668944. Its totient is φ = 393423000.

The previous prime is 396045961. The next prime is 396046003. The reversal of 396045971 is 179540693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179540693 = 79 ⋅2272667.

It is a cyclic number.

It is not a de Polignac number, because 396045971 - 2¹⁴ = 396029587 is a prime.

It is a super-2 number, since 2×396045971² = 313704822290665682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396045931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1311260 + ... + 1311561.

It is an arithmetic number, because the mean of its divisors is an integer number (99667236).

Almost surely, 2^396045971 is an apocalyptic number.

396045971 is a deficient number, since it is larger than the sum of its proper divisors (2622973).

396045971 is a wasteful number, since it uses less digits than its factorization.

396045971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622972.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 396045971 is about 19900.9037734471. The cubic root of 396045971 is about 734.3704612992.

The spelling of 396045971 in words is "three hundred ninety-six million, forty-five thousand, nine hundred seventy-one".