39996247393 has 4 divisors (see below), whose sum is σ = 40283990320. Its totient is φ = 39708504468.

The previous prime is 39996247387. The next prime is 39996247433. The reversal of 39996247393 is 39374269993.

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 a cyclic number.

It is not a de Polignac number, because 39996247393 - 2³³ = 31406312801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39996247303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143871255 + ... + 143871532.

It is an arithmetic number, because the mean of its divisors is an integer number (10070997580).

Almost surely, 2^39996247393 is an apocalyptic number.

It is an amenable number.

39996247393 is a deficient number, since it is larger than the sum of its proper divisors (287742927).

39996247393 is a wasteful number, since it uses less digits than its factorization.

39996247393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287742926.

The product of its digits is 59521392, while the sum is 64.

The spelling of 39996247393 in words is "thirty-nine billion, nine hundred ninety-six million, two hundred forty-seven thousand, three hundred ninety-three".