13485779 has 4 divisors (see below), whose sum is σ = 13493160. Its totient is φ = 13478400.

The previous prime is 13485739. The next prime is 13485781. The reversal of 13485779 is 97758431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 97758431 = 257 ⋅380383.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13485779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13485739) 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, 1304 + ... + 5354.

It is an arithmetic number, because the mean of its divisors is an integer number (3373290).

Almost surely, 2^13485779 is an apocalyptic number.

13485779 is a deficient number, since it is larger than the sum of its proper divisors (7381).

13485779 is an equidigital number, since it uses as much as digits as its factorization.

13485779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7380.

The product of its digits is 211680, while the sum is 44.

The square root of 13485779 is about 3672.2988712794. The cubic root of 13485779 is about 238.0265194186.

The spelling of 13485779 in words is "thirteen million, four hundred eighty-five thousand, seven hundred seventy-nine".