135994905 has 24 divisors (see below), whose sum is σ = 236029248. Its totient is φ = 72436896.

The previous prime is 135994897. The next prime is 135994907. The reversal of 135994905 is 509499531.

It is a happy number.

135994905 is a `hidden beast` number, since 13 + 599 + 49 + 0 + 5 = 666.

It is not a de Polignac number, because 135994905 - 2³ = 135994897 is a prime.

It is a super-2 number, since 2×135994905² = 36989228371918050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (135994907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46414 + ... + 49256.

It is an arithmetic number, because the mean of its divisors is an integer number (9834552).

Almost surely, 2^135994905 is an apocalyptic number.

135994905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135994905 is a deficient number, since it is larger than the sum of its proper divisors (100034343).

135994905 is a wasteful number, since it uses less digits than its factorization.

135994905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3917 (or 3914 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The square root of 135994905 is about 11661.6853413218. The cubic root of 135994905 is about 514.2498961496.

The spelling of 135994905 in words is "one hundred thirty-five million, nine hundred ninety-four thousand, nine hundred five".