13430779 has 4 divisors (see below), whose sum is σ = 13442560. Its totient is φ = 13419000.

The previous prime is 13430771. The next prime is 13430801. The reversal of 13430779 is 97703431.

13430779 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 not a de Polignac number, because 13430779 - 2³ = 13430771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13430771) 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, 3972 + ... + 6529.

It is an arithmetic number, because the mean of its divisors is an integer number (3360640).

Almost surely, 2^13430779 is an apocalyptic number.

13430779 is a deficient number, since it is larger than the sum of its proper divisors (11781).

13430779 is a wasteful number, since it uses less digits than its factorization.

13430779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11780.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 13430779 is about 3664.8027232035. The cubic root of 13430779 is about 237.7024917577.

The spelling of 13430779 in words is "thirteen million, four hundred thirty thousand, seven hundred seventy-nine".