400113401 has 4 divisors (see below), whose sum is σ = 402662052. Its totient is φ = 397564752.

The previous prime is 400113353. The next prime is 400113437. The reversal of 400113401 is 104311004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68873401 + 331240000 = 8299^2 + 18200^2 .

It is a cyclic number.

It is not a de Polignac number, because 400113401 - 2²⁶ = 333004537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400113601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274090 + ... + 1274403.

It is an arithmetic number, because the mean of its divisors is an integer number (100665513).

Almost surely, 2^400113401 is an apocalyptic number.

It is an amenable number.

400113401 is a deficient number, since it is larger than the sum of its proper divisors (2548651).

400113401 is a wasteful number, since it uses less digits than its factorization.

400113401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548650.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 400113401 is about 20002.8348240943. The cubic root of 400113401 is about 736.8759219585.

Adding to 400113401 its reverse (104311004), we get a palindrome (504424405).

The spelling of 400113401 in words is "four hundred million, one hundred thirteen thousand, four hundred one".