401322918 has 16 divisors (see below), whose sum is σ = 803016000. Its totient is φ = 133712616.

The previous prime is 401322899. The next prime is 401322919. The reversal of 401322918 is 819223104.

It is a super-2 number, since 2×401322918² = 322120169024069448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401322919) 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, 168 + ... + 28331.

It is an arithmetic number, because the mean of its divisors is an integer number (50188500).

Almost surely, 2^401322918 is an apocalyptic number.

401322918 is an abundant number, since it is smaller than the sum of its proper divisors (401693082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401322918 is a wasteful number, since it uses less digits than its factorization.

401322918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30851.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 401322918 is about 20033.0456496260. The cubic root of 401322918 is about 737.6176844852.

The spelling of 401322918 in words is "four hundred one million, three hundred twenty-two thousand, nine hundred eighteen".