135969904 has 30 divisors (see below), whose sum is σ = 306454344. Its totient is φ = 58272480.

The previous prime is 135969881. The next prime is 135969923. The reversal of 135969904 is 409969531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85932 + ... + 87499.

Almost surely, 2^135969904 is an apocalyptic number.

135969904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

135969904 is an abundant number, since it is smaller than the sum of its proper divisors (170484440).

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

135969904 is a wasteful number, since it uses less digits than its factorization.

135969904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173453 (or 173440 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 46.

The square root of 135969904 is about 11660.6133629411. The cubic root of 135969904 is about 514.2183813671.

The spelling of 135969904 in words is "one hundred thirty-five million, nine hundred sixty-nine thousand, nine hundred four".