401623406 has 16 divisors (see below), whose sum is σ = 636925200. Its totient is φ = 189407808.

The previous prime is 401623399. The next prime is 401623423. The reversal of 401623406 is 604326104.

It is a super-2 number, since 2×401623406² = 322602720494081672, 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 7 ways as a sum of consecutive naturals, for example, 14375 + ... + 31778.

It is an arithmetic number, because the mean of its divisors is an integer number (39807825).

Almost surely, 2^401623406 is an apocalyptic number.

401623406 is a deficient number, since it is larger than the sum of its proper divisors (235301794).

401623406 is a wasteful number, since it uses less digits than its factorization.

401623406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46403.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 401623406 is about 20040.5440544911. The cubic root of 401623406 is about 737.8017340849.

The spelling of 401623406 in words is "four hundred one million, six hundred twenty-three thousand, four hundred six".