39720607 has 2 divisors, whose sum is σ = 39720608. Its totient is φ = 39720606.

The previous prime is 39720601. The next prime is 39720613. The reversal of 39720607 is 70602793.

It is a balanced prime because it is at equal distance from previous prime (39720601) and next prime (39720613).

It is an emirp because it is prime and its reverse (70602793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39720607 - 2²³ = 31331999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39720601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19860303 + 19860304.

It is an arithmetic number, because the mean of its divisors is an integer number (19860304).

Almost surely, 2^39720607 is an apocalyptic number.

39720607 is a deficient number, since it is larger than the sum of its proper divisors (1).

39720607 is an equidigital number, since it uses as much as digits as its factorization.

39720607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 39720607 is about 6302.4286588584. The cubic root of 39720607 is about 341.1970693486.

The spelling of 39720607 in words is "thirty-nine million, seven hundred twenty thousand, six hundred seven".