136779369 has 4 divisors (see below), whose sum is σ = 182372496. Its totient is φ = 91186244.

The previous prime is 136779337. The next prime is 136779371. The reversal of 136779369 is 963977631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136779369 - 2⁵ = 136779337 is a prime.

It is a super-2 number, since 2×136779369² = 37417191568076322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136779329) 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, 22796559 + ... + 22796564.

It is an arithmetic number, because the mean of its divisors is an integer number (45593124).

Almost surely, 2^136779369 is an apocalyptic number.

It is an amenable number.

136779369 is a deficient number, since it is larger than the sum of its proper divisors (45593127).

136779369 is an equidigital number, since it uses as much as digits as its factorization.

136779369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45593126.

The product of its digits is 1285956, while the sum is 51.

The square root of 136779369 is about 11695.2712238751. The cubic root of 136779369 is about 515.2367893422.

The spelling of 136779369 in words is "one hundred thirty-six million, seven hundred seventy-nine thousand, three hundred sixty-nine".