39713330491 has 4 divisors (see below), whose sum is σ = 41803505800. Its totient is φ = 37623155184.

The previous prime is 39713330483. The next prime is 39713330507. The reversal of 39713330491 is 19403331793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19403331793 = 10429 ⋅1860517.

It is a cyclic number.

It is not a de Polignac number, because 39713330491 - 2³ = 39713330483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39713330411) 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, 1045087626 + ... + 1045087663.

It is an arithmetic number, because the mean of its divisors is an integer number (10450876450).

Almost surely, 2^39713330491 is an apocalyptic number.

39713330491 is a deficient number, since it is larger than the sum of its proper divisors (2090175309).

39713330491 is a wasteful number, since it uses less digits than its factorization.

39713330491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090175308.

The product of its (nonzero) digits is 183708, while the sum is 43.

The spelling of 39713330491 in words is "thirty-nine billion, seven hundred thirteen million, three hundred thirty thousand, four hundred ninety-one".