136923479 has 24 divisors (see below), whose sum is σ = 173389440. Its totient is φ = 105834960.

The previous prime is 136923461. The next prime is 136923487. The reversal of 136923479 is 974329631.

It is not a de Polignac number, because 136923479 - 2¹⁶ = 136857943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136923499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117152 + ... + 118314.

It is an arithmetic number, because the mean of its divisors is an integer number (7224560).

Almost surely, 2^136923479 is an apocalyptic number.

136923479 is a deficient number, since it is larger than the sum of its proper divisors (36465961).

136923479 is a wasteful number, since it uses less digits than its factorization.

136923479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331 (or 1320 counting only the distinct ones).

The product of its digits is 244944, while the sum is 44.

The square root of 136923479 is about 11701.4306390287. The cubic root of 136923479 is about 515.4176760572.

It can be divided in two parts, 13692 and 3479, that added together give a palindrome (17171).

The spelling of 136923479 in words is "one hundred thirty-six million, nine hundred twenty-three thousand, four hundred seventy-nine".