39245685249 has 4 divisors (see below), whose sum is σ = 52327580336. Its totient is φ = 26163790164.

The previous prime is 39245685233. The next prime is 39245685251. The reversal of 39245685249 is 94258654293.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 39245685249 - 2⁴ = 39245685233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39245683249) 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 in 3 ways as a sum of consecutive naturals, for example, 6540947539 + ... + 6540947544.

It is an arithmetic number, because the mean of its divisors is an integer number (13081895084).

Almost surely, 2^39245685249 is an apocalyptic number.

It is an amenable number.

39245685249 is a deficient number, since it is larger than the sum of its proper divisors (13081895087).

39245685249 is a wasteful number, since it uses less digits than its factorization.

39245685249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13081895086.

The product of its digits is 18662400, while the sum is 57.

The spelling of 39245685249 in words is "thirty-nine billion, two hundred forty-five million, six hundred eighty-five thousand, two hundred forty-nine".