400831401 has 16 divisors (see below), whose sum is σ = 541399040. Its totient is φ = 263759760.

The previous prime is 400831367. The next prime is 400831433. The reversal of 400831401 is 104138004.

It is not a de Polignac number, because 400831401 - 2²² = 396637097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400431401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100320 + ... + 104238.

It is an arithmetic number, because the mean of its divisors is an integer number (33837440).

Almost surely, 2^400831401 is an apocalyptic number.

It is an amenable number.

400831401 is a deficient number, since it is larger than the sum of its proper divisors (140567639).

400831401 is a wasteful number, since it uses less digits than its factorization.

400831401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 400831401 is about 20020.7742357782. The cubic root of 400831401 is about 737.3164310334.

Adding to 400831401 its reverse (104138004), we get a palindrome (504969405).

The spelling of 400831401 in words is "four hundred million, eight hundred thirty-one thousand, four hundred one".