14779957909 has 4 divisors (see below), whose sum is σ = 15289611660. Its totient is φ = 14270304160.

The previous prime is 14779957903. The next prime is 14779957919. The reversal of 14779957909 is 90975997741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90975997741 = 439 ⋅207234619.

It can be written as a sum of positive squares in 2 ways, for example, as 3926902225 + 10853055684 = 62665^2 + 104178^2 .

It is a cyclic number.

It is not a de Polignac number, because 14779957909 - 2¹⁵ = 14779925141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14779957903) 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, 254826832 + ... + 254826889.

It is an arithmetic number, because the mean of its divisors is an integer number (3822402915).

Almost surely, 2^14779957909 is an apocalyptic number.

It is an amenable number.

14779957909 is a deficient number, since it is larger than the sum of its proper divisors (509653751).

14779957909 is an equidigital number, since it uses as much as digits as its factorization.

14779957909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509653750.

The product of its (nonzero) digits is 45008460, while the sum is 67.

The spelling of 14779957909 in words is "fourteen billion, seven hundred seventy-nine million, nine hundred fifty-seven thousand, nine hundred nine".