11969535 has 16 divisors (see below), whose sum is σ = 19422720. Its totient is φ = 6293280.

The previous prime is 11969519. The next prime is 11969539. The reversal of 11969535 is 53596911.

It is not a de Polignac number, because 11969535 - 2⁴ = 11969519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11969493 and 11969502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11969539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4555 + ... + 6684.

It is an arithmetic number, because the mean of its divisors is an integer number (1213920).

Almost surely, 2^11969535 is an apocalyptic number.

11969535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11969535 is a deficient number, since it is larger than the sum of its proper divisors (7453185).

11969535 is a wasteful number, since it uses less digits than its factorization.

11969535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11318.

The product of its digits is 36450, while the sum is 39.

The square root of 11969535 is about 3459.7015767259. The cubic root of 11969535 is about 228.7489414386.

It can be divided in two parts, 1196 and 9535, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 11969535 in words is "eleven million, nine hundred sixty-nine thousand, five hundred thirty-five".