135439764 has 24 divisors (see below), whose sum is σ = 321208608. Its totient is φ = 44406240.

The previous prime is 135439757. The next prime is 135439781. The reversal of 135439764 is 467934531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91782 + ... + 93245.

It is an arithmetic number, because the mean of its divisors is an integer number (13383692).

Almost surely, 2^135439764 is an apocalyptic number.

It is an amenable number.

135439764 is an abundant number, since it is smaller than the sum of its proper divisors (185768844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135439764 is a wasteful number, since it uses less digits than its factorization.

135439764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185095 (or 185093 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The square root of 135439764 is about 11637.8590814634. The cubic root of 135439764 is about 513.5492068198.

The spelling of 135439764 in words is "one hundred thirty-five million, four hundred thirty-nine thousand, seven hundred sixty-four".