135752969 has 16 divisors (see below), whose sum is σ = 155326464. Its totient is φ = 117440400.

The previous prime is 135752951. The next prime is 135752971. The reversal of 135752969 is 969257531.

135752969 = 3508² + 3509² + ... + 3518².

It is a de Polignac number, because none of the positive numbers 2^k-135752969 is a prime.

It is a super-2 number, since 2×135752969² = 36857737184629922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135752909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52112 + ... + 54654.

It is an arithmetic number, because the mean of its divisors is an integer number (9707904).

Almost surely, 2^135752969 is an apocalyptic number.

It is an amenable number.

135752969 is a deficient number, since it is larger than the sum of its proper divisors (19573495).

135752969 is a wasteful number, since it uses less digits than its factorization.

135752969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788.

The product of its digits is 510300, while the sum is 47.

The square root of 135752969 is about 11651.3076090197. The cubic root of 135752969 is about 513.9447636041.

The spelling of 135752969 in words is "one hundred thirty-five million, seven hundred fifty-two thousand, nine hundred sixty-nine".