39794579761 has 8 divisors (see below), whose sum is σ = 42148925640. Its totient is φ = 37441732608.

The previous prime is 39794579719. The next prime is 39794579791. The reversal of 39794579761 is 16797549793.

It can be written as a sum of positive squares in 4 ways, for example, as 18075189136 + 21719390625 = 134444^2 + 147375^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39794579761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39794579791) 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, 319776 + ... + 426433.

It is an arithmetic number, because the mean of its divisors is an integer number (5268615705).

Almost surely, 2^39794579761 is an apocalyptic number.

It is an amenable number.

39794579761 is a deficient number, since it is larger than the sum of its proper divisors (2354345879).

39794579761 is a wasteful number, since it uses less digits than its factorization.

39794579761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749363.

The product of its digits is 90016920, while the sum is 67.

The spelling of 39794579761 in words is "thirty-nine billion, seven hundred ninety-four million, five hundred seventy-nine thousand, seven hundred sixty-one".