40006579 has 2 divisors, whose sum is σ = 40006580. Its totient is φ = 40006578.

The previous prime is 40006537. The next prime is 40006607. The reversal of 40006579 is 97560004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40006579 - 2⁹ = 40006067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40006579.

It is not a weakly prime, because it can be changed into another prime (40000579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20003289 + 20003290.

It is an arithmetic number, because the mean of its divisors is an integer number (20003290).

Almost surely, 2^40006579 is an apocalyptic number.

40006579 is a deficient number, since it is larger than the sum of its proper divisors (1).

40006579 is an equidigital number, since it uses as much as digits as its factorization.

40006579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 40006579 is about 6325.0754145702. The cubic root of 40006579 is about 342.0139381937.

The spelling of 40006579 in words is "forty million, six thousand, five hundred seventy-nine".