39491348539 has 4 divisors (see below), whose sum is σ = 40765263040. Its totient is φ = 38217434040.

The previous prime is 39491348537. The next prime is 39491348557. The reversal of 39491348539 is 93584319493.

It is a happy number.

39491348539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93584319493 = 7 ⋅13369188499.

It is a cyclic number.

It is not a de Polignac number, because 39491348539 - 2¹ = 39491348537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39491348537) 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, 636957204 + ... + 636957265.

It is an arithmetic number, because the mean of its divisors is an integer number (10191315760).

Almost surely, 2^39491348539 is an apocalyptic number.

39491348539 is a deficient number, since it is larger than the sum of its proper divisors (1273914501).

39491348539 is a wasteful number, since it uses less digits than its factorization.

39491348539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273914500.

The product of its digits is 12597120, while the sum is 58.

The spelling of 39491348539 in words is "thirty-nine billion, four hundred ninety-one million, three hundred forty-eight thousand, five hundred thirty-nine".