136029749 has 8 divisors (see below), whose sum is σ = 140884920. Its totient is φ = 131185600.

The previous prime is 136029737. The next prime is 136029757. The reversal of 136029749 is 947920631.

It can be written as a sum of positive squares in 4 ways, for example, as 51940849 + 84088900 = 7207^2 + 9170^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136029749 is a prime.

It is a super-2 number, since 2×136029749² = 37008185226006002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136020749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28559 + ... + 32979.

It is an arithmetic number, because the mean of its divisors is an integer number (17610615).

Almost surely, 2^136029749 is an apocalyptic number.

It is an amenable number.

136029749 is a deficient number, since it is larger than the sum of its proper divisors (4855171).

136029749 is a wasteful number, since it uses less digits than its factorization.

136029749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5511.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 136029749 is about 11663.1791978002. The cubic root of 136029749 is about 514.2938119940.

The spelling of 136029749 in words is "one hundred thirty-six million, twenty-nine thousand, seven hundred forty-nine".