400132401 has 8 divisors (see below), whose sum is σ = 551906880. Its totient is φ = 257556432.

The previous prime is 400132391. The next prime is 400132427. The reversal of 400132401 is 104231004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400132401 - 2¹³ = 400124209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400132801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2299525 + ... + 2299698.

It is an arithmetic number, because the mean of its divisors is an integer number (68988360).

Almost surely, 2^400132401 is an apocalyptic number.

It is an amenable number.

400132401 is a deficient number, since it is larger than the sum of its proper divisors (151774479).

400132401 is a wasteful number, since it uses less digits than its factorization.

400132401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599255.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 400132401 is about 20003.3097511387. The cubic root of 400132401 is about 736.8875856692.

Adding to 400132401 its reverse (104231004), we get a palindrome (504363405).

The spelling of 400132401 in words is "four hundred million, one hundred thirty-two thousand, four hundred one".