40579499 has 2 divisors, whose sum is σ = 40579500. Its totient is φ = 40579498.

The previous prime is 40579489. The next prime is 40579507. The reversal of 40579499 is 99497504.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40579499 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40579489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20289749 + 20289750.

It is an arithmetic number, because the mean of its divisors is an integer number (20289750).

Almost surely, 2^40579499 is an apocalyptic number.

40579499 is a deficient number, since it is larger than the sum of its proper divisors (1).

40579499 is an equidigital number, since it uses as much as digits as its factorization.

40579499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 40579499 is about 6370.2039998732. The cubic root of 40579499 is about 343.6388262415.

The spelling of 40579499 in words is "forty million, five hundred seventy-nine thousand, four hundred ninety-nine".