400404053 has 4 divisors (see below), whose sum is σ = 457604640. Its totient is φ = 343203468.

The previous prime is 400404049. The next prime is 400404071. The reversal of 400404053 is 350404004.

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 400404053 - 2² = 400404049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400404013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28600283 + ... + 28600296.

It is an arithmetic number, because the mean of its divisors is an integer number (114401160).

Almost surely, 2^400404053 is an apocalyptic number.

It is an amenable number.

400404053 is a deficient number, since it is larger than the sum of its proper divisors (57200587).

400404053 is an equidigital number, since it uses as much as digits as its factorization.

400404053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57200586.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 400404053 is about 20010.0987753684. The cubic root of 400404053 is about 737.0543069033.

Adding to 400404053 its reverse (350404004), we get a palindrome (750808057).

The spelling of 400404053 in words is "four hundred million, four hundred four thousand, fifty-three".