135769749 has 12 divisors (see below), whose sum is σ = 182030976. Its totient is φ = 90013488.

The previous prime is 135769727. The next prime is 135769757. The reversal of 135769749 is 947967531.

135769749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135769749 - 2⁵ = 135769717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135761749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156892 + ... + 157754.

It is an arithmetic number, because the mean of its divisors is an integer number (15169248).

Almost surely, 2^135769749 is an apocalyptic number.

It is an amenable number.

135769749 is a deficient number, since it is larger than the sum of its proper divisors (46261227).

135769749 is an frugal number, since it uses more digits than its factorization.

135769749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324 (or 1095 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 51.

The square root of 135769749 is about 11652.0276776190. The cubic root of 135769749 is about 513.9659384334.

The spelling of 135769749 in words is "one hundred thirty-five million, seven hundred sixty-nine thousand, seven hundred forty-nine".