401405716 has 12 divisors (see below), whose sum is σ = 707113120. Its totient is φ = 199373400.

The previous prime is 401405707. The next prime is 401405737. The reversal of 401405716 is 617504104.

It is a super-2 number, since 2×401405716² = 322253097674945312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331686 + ... + 332893.

Almost surely, 2^401405716 is an apocalyptic number.

It is an amenable number.

401405716 is a deficient number, since it is larger than the sum of its proper divisors (305707404).

401405716 is a wasteful number, since it uses less digits than its factorization.

401405716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664734 (or 664732 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 401405716 is about 20035.1120785485. The cubic root of 401405716 is about 737.6684076200.

The spelling of 401405716 in words is "four hundred one million, four hundred five thousand, seven hundred sixteen".