400232641 has 4 divisors (see below), whose sum is σ = 403287984. Its totient is φ = 397177300.

The previous prime is 400232639. The next prime is 400232659. The reversal of 400232641 is 146232004.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400232641 - 2¹ = 400232639 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400232621) 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, 1527475 + ... + 1527736.

It is an arithmetic number, because the mean of its divisors is an integer number (100821996).

Almost surely, 2^400232641 is an apocalyptic number.

It is an amenable number.

400232641 is a deficient number, since it is larger than the sum of its proper divisors (3055343).

400232641 is a wasteful number, since it uses less digits than its factorization.

400232641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055342.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 400232641 is about 20005.8151795922. The cubic root of 400232641 is about 736.9491148398.

Adding to 400232641 its reverse (146232004), we get a palindrome (546464645).

The spelling of 400232641 in words is "four hundred million, two hundred thirty-two thousand, six hundred forty-one".