400404083 has 2 divisors, whose sum is σ = 400404084. Its totient is φ = 400404082.

The previous prime is 400404071. The next prime is 400404113. The reversal of 400404083 is 380404004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400404083 - 2⁶ = 400404019 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (400404013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200202041 + 200202042.

It is an arithmetic number, because the mean of its divisors is an integer number (200202042).

Almost surely, 2^400404083 is an apocalyptic number.

400404083 is a deficient number, since it is larger than the sum of its proper divisors (1).

400404083 is an equidigital number, since it uses as much as digits as its factorization.

400404083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 400404083 is about 20010.0995249899. The cubic root of 400404083 is about 737.0543253111.

Adding to 400404083 its reverse (380404004), we get a palindrome (780808087).

The spelling of 400404083 in words is "four hundred million, four hundred four thousand, eighty-three".