401451806 has 24 divisors (see below), whose sum is σ = 710959176. Its totient is φ = 169480080.

The previous prime is 401451803. The next prime is 401451847. The reversal of 401451806 is 608154104.

It is a super-2 number, since 2×401451806² = 322327105081323272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401451803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24005 + ... + 37136.

It is an arithmetic number, because the mean of its divisors is an integer number (29623299).

Almost surely, 2^401451806 is an apocalyptic number.

401451806 is a deficient number, since it is larger than the sum of its proper divisors (309507370).

401451806 is a wasteful number, since it uses less digits than its factorization.

401451806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61224 (or 61217 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 401451806 is about 20036.2622761832. The cubic root of 401451806 is about 737.6966399332.

The spelling of 401451806 in words is "four hundred one million, four hundred fifty-one thousand, eight hundred six".