39490907 has 2 divisors, whose sum is σ = 39490908. Its totient is φ = 39490906.

The previous prime is 39490889. The next prime is 39490961. The reversal of 39490907 is 70909493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39490907 - 2⁸ = 39490651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39490207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19745453 + 19745454.

It is an arithmetic number, because the mean of its divisors is an integer number (19745454).

Almost surely, 2^39490907 is an apocalyptic number.

39490907 is a deficient number, since it is larger than the sum of its proper divisors (1).

39490907 is an equidigital number, since it uses as much as digits as its factorization.

39490907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 39490907 is about 6284.1791031128. The cubic root of 39490907 is about 340.5380954629.

The spelling of 39490907 in words is "thirty-nine million, four hundred ninety thousand, nine hundred seven".