400035402979 has 2 divisors, whose sum is σ = 400035402980. Its totient is φ = 400035402978.

The previous prime is 400035402973. The next prime is 400035403037. The reversal of 400035402979 is 979204530004.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400035402979 is a prime.

It is not a weakly prime, because it can be changed into another prime (400035402973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200017701489 + 200017701490.

It is an arithmetic number, because the mean of its divisors is an integer number (200017701490).

Almost surely, 2^400035402979 is an apocalyptic number.

400035402979 is a deficient number, since it is larger than the sum of its proper divisors (1).

400035402979 is an equidigital number, since it uses as much as digits as its factorization.

400035402979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 400035402979 in words is "four hundred billion, thirty-five million, four hundred two thousand, nine hundred seventy-nine".