39490049 has 2 divisors, whose sum is σ = 39490050. Its totient is φ = 39490048.

The previous prime is 39489991. The next prime is 39490051. The reversal of 39490049 is 94009493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22391824 + 17098225 = 4732^2 + 4135^2 .

It is an emirp because it is prime and its reverse (94009493) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39490049 is a prime.

Together with 39490051, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 39489994 and 39490021.

It is not a weakly prime, because it can be changed into another prime (39490069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19745024 + 19745025.

It is an arithmetic number, because the mean of its divisors is an integer number (19745025).

Almost surely, 2^39490049 is an apocalyptic number.

It is an amenable number.

39490049 is a deficient number, since it is larger than the sum of its proper divisors (1).

39490049 is an equidigital number, since it uses as much as digits as its factorization.

39490049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 39490049 is about 6284.1108360690. The cubic root of 39490049 is about 340.5356292091.

The spelling of 39490049 in words is "thirty-nine million, four hundred ninety thousand, forty-nine".