39779297793 has 12 divisors (see below), whose sum is σ = 57482789988. Its totient is φ = 26508545280.

The previous prime is 39779297783. The next prime is 39779297813.

39779297793 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 32158531584 + 7620766209 = 179328^2 + 87297^2 .

It is not a de Polignac number, because 39779297793 - 2²¹ = 39777200641 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39779297783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 892588 + ... + 936093.

It is an arithmetic number, because the mean of its divisors is an integer number (4790232499).

Almost surely, 2^39779297793 is an apocalyptic number.

It is an amenable number.

39779297793 is a deficient number, since it is larger than the sum of its proper divisors (17703492195).

39779297793 is a wasteful number, since it uses less digits than its factorization.

39779297793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831104 (or 1831101 counting only the distinct ones).

The product of its digits is 283553298, while the sum is 72.

The spelling of 39779297793 in words is "thirty-nine billion, seven hundred seventy-nine million, two hundred ninety-seven thousand, seven hundred ninety-three".