401367897 has 48 divisors (see below), whose sum is σ = 684328320. Its totient is φ = 221895936.

The previous prime is 401367893. The next prime is 401367949. The reversal of 401367897 is 798763104.

It is not a de Polignac number, because 401367897 - 2² = 401367893 is a prime.

It is a super-2 number, since 2×401367897² = 322192377484405218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401367893) 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 47 ways as a sum of consecutive naturals, for example, 542754 + ... + 543492.

It is an arithmetic number, because the mean of its divisors is an integer number (14256840).

Almost surely, 2^401367897 is an apocalyptic number.

It is an amenable number.

401367897 is a deficient number, since it is larger than the sum of its proper divisors (282960423).

401367897 is a wasteful number, since it uses less digits than its factorization.

401367897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 401367897 is about 20034.1682382873. The cubic root of 401367897 is about 737.6452400728.

The spelling of 401367897 in words is "four hundred one million, three hundred sixty-seven thousand, eight hundred ninety-seven".