13961535 has 16 divisors (see below), whose sum is σ = 25529856. Its totient is φ = 6382368.

The previous prime is 13961531. The next prime is 13961537. The reversal of 13961535 is 53516931.

It is not a de Polignac number, because 13961535 - 2² = 13961531 is a prime.

It is a super-3 number, since 3×13961535³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13961496 and 13961505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13961531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66379 + ... + 66588.

It is an arithmetic number, because the mean of its divisors is an integer number (1595616).

Almost surely, 2^13961535 is an apocalyptic number.

13961535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13961535 is a deficient number, since it is larger than the sum of its proper divisors (11568321).

13961535 is a wasteful number, since it uses less digits than its factorization.

13961535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132982.

The product of its digits is 12150, while the sum is 33.

The square root of 13961535 is about 3736.5137494729. The cubic root of 13961535 is about 240.7932950952.

The spelling of 13961535 in words is "thirteen million, nine hundred sixty-one thousand, five hundred thirty-five".