401859790 has 16 divisors (see below), whose sum is σ = 723702240. Its totient is φ = 160665120.

The previous prime is 401859779. The next prime is 401859791. The reversal of 401859790 is 97958104.

It is a super-2 number, since 2×401859790² = 322982581637688200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401859791) 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 7 ways as a sum of consecutive naturals, for example, 14416 + ... + 31804.

It is an arithmetic number, because the mean of its divisors is an integer number (45231390).

Almost surely, 2^401859790 is an apocalyptic number.

401859790 is a deficient number, since it is larger than the sum of its proper divisors (321842450).

401859790 is a wasteful number, since it uses less digits than its factorization.

401859790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19707.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 401859790 is about 20046.4408312299. The cubic root of 401859790 is about 737.9464553314.

The spelling of 401859790 in words is "four hundred one million, eight hundred fifty-nine thousand, seven hundred ninety".