135869474 has 16 divisors (see below), whose sum is σ = 232392888. Its totient is φ = 59020032.

The previous prime is 135869473. The next prime is 135869477. The reversal of 135869474 is 474968531.

It can be written as a sum of positive squares in 4 ways, for example, as 119749249 + 16120225 = 10943^2 + 4015^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135869473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153257 + ... + 154140.

Almost surely, 2^135869474 is an apocalyptic number.

135869474 is a deficient number, since it is larger than the sum of its proper divisors (96523414).

135869474 is a wasteful number, since it uses less digits than its factorization.

135869474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307429.

The product of its digits is 725760, while the sum is 47.

The square root of 135869474 is about 11656.3061902131. The cubic root of 135869474 is about 514.0917463040.

The spelling of 135869474 in words is "one hundred thirty-five million, eight hundred sixty-nine thousand, four hundred seventy-four".