400612801 has 4 divisors (see below), whose sum is σ = 411440212. Its totient is φ = 389785392.

The previous prime is 400612787. The next prime is 400612843. The reversal of 400612801 is 108216004.

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 379314576 + 21298225 = 19476^2 + 4615^2 .

It is a cyclic number.

It is not a de Polignac number, because 400612801 - 2¹¹ = 400610753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400612501) 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, 5413650 + ... + 5413723.

It is an arithmetic number, because the mean of its divisors is an integer number (102860053).

Almost surely, 2^400612801 is an apocalyptic number.

It is an amenable number.

400612801 is a deficient number, since it is larger than the sum of its proper divisors (10827411).

400612801 is a wasteful number, since it uses less digits than its factorization.

400612801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10827410.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 400612801 is about 20015.3141619111. The cubic root of 400612801 is about 737.1823707772.

Adding to 400612801 its reverse (108216004), we get a palindrome (508828805).

It can be divided in two parts, 4006 and 12801, that added together give a 5-th power (16807 = 7⁵).

The spelling of 400612801 in words is "four hundred million, six hundred twelve thousand, eight hundred one".