136344729 has 8 divisors (see below), whose sum is σ = 183120480. Its totient is φ = 90232736.

The previous prime is 136344679. The next prime is 136344731. The reversal of 136344729 is 927443631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136344729 - 2⁸ = 136344473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136344739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165459 + ... + 166280.

It is an arithmetic number, because the mean of its divisors is an integer number (22890060).

Almost surely, 2^136344729 is an apocalyptic number.

It is an amenable number.

136344729 is a deficient number, since it is larger than the sum of its proper divisors (46775751).

136344729 is a wasteful number, since it uses less digits than its factorization.

136344729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331879.

The product of its digits is 108864, while the sum is 39.

The square root of 136344729 is about 11676.6745694140. The cubic root of 136344729 is about 514.6904590374.

It can be divided in two parts, 136 and 344729, that added together give a triangular number (344865 = T₈₃₀).

The spelling of 136344729 in words is "one hundred thirty-six million, three hundred forty-four thousand, seven hundred twenty-nine".