39490673 has 2 divisors, whose sum is σ = 39490674. Its totient is φ = 39490672.

The previous prime is 39490651. The next prime is 39490679. The reversal of 39490673 is 37609493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37662769 + 1827904 = 6137^2 + 1352^2 .

It is a cyclic number.

It is not a de Polignac number, because 39490673 - 2¹⁶ = 39425137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39490673.

It is not a weakly prime, because it can be changed into another prime (39490679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19745336 + 19745337.

It is an arithmetic number, because the mean of its divisors is an integer number (19745337).

Almost surely, 2^39490673 is an apocalyptic number.

It is an amenable number.

39490673 is a deficient number, since it is larger than the sum of its proper divisors (1).

39490673 is an equidigital number, since it uses as much as digits as its factorization.

39490673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 39490673 is about 6284.1604849017. The cubic root of 39490673 is about 340.5374228518.

The spelling of 39490673 in words is "thirty-nine million, four hundred ninety thousand, six hundred seventy-three".