400237401 has 16 divisors (see below), whose sum is σ = 536981184. Its totient is φ = 265165824.

The previous prime is 400237391. The next prime is 400237433. The reversal of 400237401 is 104732004.

It is not a de Polignac number, because 400237401 - 2²⁵ = 366682969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400237471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483550 + ... + 484376.

It is an arithmetic number, because the mean of its divisors is an integer number (33561324).

Almost surely, 2^400237401 is an apocalyptic number.

It is an amenable number.

400237401 is a deficient number, since it is larger than the sum of its proper divisors (136743783).

400237401 is a wasteful number, since it uses less digits than its factorization.

400237401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 400237401 is about 20005.9341446482. The cubic root of 400237401 is about 736.9520363605.

Adding to 400237401 its reverse (104732004), we get a palindrome (504969405).

The spelling of 400237401 in words is "four hundred million, two hundred thirty-seven thousand, four hundred one".