400386683 has 2 divisors, whose sum is σ = 400386684. Its totient is φ = 400386682.

The previous prime is 400386643. The next prime is 400386733. The reversal of 400386683 is 386683004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400386683 - 2⁶ = 400386619 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (400386643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200193341 + 200193342.

It is an arithmetic number, because the mean of its divisors is an integer number (200193342).

Almost surely, 2^400386683 is an apocalyptic number.

400386683 is a deficient number, since it is larger than the sum of its proper divisors (1).

400386683 is an equidigital number, since it uses as much as digits as its factorization.

400386683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 400386683 is about 20009.6647398201. The cubic root of 400386683 is about 737.0436486542.

The spelling of 400386683 in words is "four hundred million, three hundred eighty-six thousand, six hundred eighty-three".