39785979513 has 8 divisors (see below), whose sum is σ = 60626254528. Its totient is φ = 22734845424.

The previous prime is 39785979509. The next prime is 39785979517. The reversal of 39785979513 is 31597958793.

It is an interprime number because it is at equal distance from previous prime (39785979509) and next prime (39785979517).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39785979513 - 2² = 39785979509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39785979517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 947285206 + ... + 947285247.

It is an arithmetic number, because the mean of its divisors is an integer number (7578281816).

Almost surely, 2^39785979513 is an apocalyptic number.

It is an amenable number.

39785979513 is a deficient number, since it is larger than the sum of its proper divisors (20840275015).

39785979513 is a wasteful number, since it uses less digits than its factorization.

39785979513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894570463.

The product of its digits is 64297800, while the sum is 66.

The spelling of 39785979513 in words is "thirty-nine billion, seven hundred eighty-five million, nine hundred seventy-nine thousand, five hundred thirteen".