136379639 has 16 divisors (see below), whose sum is σ = 151886976. Its totient is φ = 121413600.

The previous prime is 136379629. The next prime is 136379647. The reversal of 136379639 is 936973631.

It is not a de Polignac number, because 136379639 - 2⁴ = 136379623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136379593 and 136379602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136379629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155069 + ... + 155945.

It is an arithmetic number, because the mean of its divisors is an integer number (9492936).

Almost surely, 2^136379639 is an apocalyptic number.

136379639 is a deficient number, since it is larger than the sum of its proper divisors (15507337).

136379639 is a wasteful number, since it uses less digits than its factorization.

136379639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166.

The product of its digits is 551124, while the sum is 47.

The square root of 136379639 is about 11678.1693342750. The cubic root of 136379639 is about 514.7343827758.

The spelling of 136379639 in words is "one hundred thirty-six million, three hundred seventy-nine thousand, six hundred thirty-nine".