40402222979 has 2 divisors, whose sum is σ = 40402222980. Its totient is φ = 40402222978.

The previous prime is 40402222963. The next prime is 40402223053. The reversal of 40402222979 is 97922220404.

40402222979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40402222979 - 2⁴ = 40402222963 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (40402222379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20201111489 + 20201111490.

It is an arithmetic number, because the mean of its divisors is an integer number (20201111490).

Almost surely, 2^40402222979 is an apocalyptic number.

40402222979 is a deficient number, since it is larger than the sum of its proper divisors (1).

40402222979 is an equidigital number, since it uses as much as digits as its factorization.

40402222979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 40402222979 in words is "forty billion, four hundred two million, two hundred twenty-two thousand, nine hundred seventy-nine".