401801290 has 32 divisors (see below), whose sum is σ = 835406784. Its totient is φ = 137514240.

The previous prime is 401801263. The next prime is 401801291. The reversal of 401801290 is 92108104.

It is a happy number.

It is a super-2 number, since 2×401801290² = 322888553291328200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401801291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105564 + ... + 109303.

It is an arithmetic number, because the mean of its divisors is an integer number (26106462).

Almost surely, 2^401801290 is an apocalyptic number.

401801290 is an abundant number, since it is smaller than the sum of its proper divisors (433605494).

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

401801290 is a wasteful number, since it uses less digits than its factorization.

401801290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214902.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 401801290 is about 20044.9816662426. The cubic root of 401801290 is about 737.9106451942.

Adding to 401801290 its reverse (92108104), we get a palindrome (493909394).

The spelling of 401801290 in words is "four hundred one million, eight hundred one thousand, two hundred ninety".