5131469779 has 4 divisors (see below), whose sum is σ = 5131673784. Its totient is φ = 5131265776.

The previous prime is 5131469753. The next prime is 5131469803. The reversal of 5131469779 is 9779641315.

5131469779 is digitally balanced in base 3, 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5131469779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5131469719) 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, 57922 + ... + 116695.

It is an arithmetic number, because the mean of its divisors is an integer number (1282918446).

Almost surely, 2^5131469779 is an apocalyptic number.

5131469779 is a deficient number, since it is larger than the sum of its proper divisors (204005).

5131469779 is a wasteful number, since it uses less digits than its factorization.

5131469779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204004.

The product of its digits is 1428840, while the sum is 52.

The square root of 5131469779 is about 71634.2779610432. The cubic root of 5131469779 is about 1724.8338176673.

The spelling of 5131469779 in words is "five billion, one hundred thirty-one million, four hundred sixty-nine thousand, seven hundred seventy-nine".