397904411 has 4 divisors (see below), whose sum is σ = 400438992. Its totient is φ = 395369832.

The previous prime is 397904383. The next prime is 397904417. The reversal of 397904411 is 114409793.

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

It is a cyclic number.

It is not a de Polignac number, because 397904411 - 2¹⁴ = 397888027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397904417) 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, 1267055 + ... + 1267368.

It is an arithmetic number, because the mean of its divisors is an integer number (100109748).

Almost surely, 2^397904411 is an apocalyptic number.

397904411 is a deficient number, since it is larger than the sum of its proper divisors (2534581).

397904411 is a wasteful number, since it uses less digits than its factorization.

397904411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534580.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 397904411 is about 19947.5414775857. The cubic root of 397904411 is about 735.5173435179.

The spelling of 397904411 in words is "three hundred ninety-seven million, nine hundred four thousand, four hundred eleven".