40660079 has 2 divisors, whose sum is σ = 40660080. Its totient is φ = 40660078.

The previous prime is 40660049. The next prime is 40660091. The reversal of 40660079 is 97006604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40660079 - 2²⁰ = 39611503 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40660049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20330039 + 20330040.

It is an arithmetic number, because the mean of its divisors is an integer number (20330040).

Almost surely, 2^40660079 is an apocalyptic number.

40660079 is a deficient number, since it is larger than the sum of its proper divisors (1).

40660079 is an equidigital number, since it uses as much as digits as its factorization.

40660079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 40660079 is about 6376.5256213709. The cubic root of 40660079 is about 343.8661340276.

The spelling of 40660079 in words is "forty million, six hundred sixty thousand, seventy-nine".