40990679 has 2 divisors, whose sum is σ = 40990680. Its totient is φ = 40990678.

The previous prime is 40990673. The next prime is 40990687. The reversal of 40990679 is 97609904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40990679 - 2²⁰ = 39942103 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40990673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20495339 + 20495340.

It is an arithmetic number, because the mean of its divisors is an integer number (20495340).

Almost surely, 2^40990679 is an apocalyptic number.

40990679 is a deficient number, since it is larger than the sum of its proper divisors (1).

40990679 is an equidigital number, since it uses as much as digits as its factorization.

40990679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 40990679 is about 6402.3963482434. The cubic root of 40990679 is about 344.7955912994.

The spelling of 40990679 in words is "forty million, nine hundred ninety thousand, six hundred seventy-nine".