39000491 has 2 divisors, whose sum is σ = 39000492. Its totient is φ = 39000490.

The previous prime is 39000487. The next prime is 39000509. The reversal of 39000491 is 19400093.

It is a happy number.

39000491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39000491 - 2² = 39000487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39000491.

It is not a weakly prime, because it can be changed into another prime (39000191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19500245 + 19500246.

It is an arithmetic number, because the mean of its divisors is an integer number (19500246).

Almost surely, 2^39000491 is an apocalyptic number.

39000491 is a deficient number, since it is larger than the sum of its proper divisors (1).

39000491 is an equidigital number, since it uses as much as digits as its factorization.

39000491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 39000491 is about 6245.0373097364. The cubic root of 39000491 is about 339.1225674449.

The spelling of 39000491 in words is "thirty-nine million, four hundred ninety-one", and thus it is an aban number.