13694949 has 12 divisors (see below), whose sum is σ = 19831500. Its totient is φ = 9106944.

The previous prime is 13694909. The next prime is 13694951. The reversal of 13694949 is 94949631.

It can be written as a sum of positive squares in 2 ways, for example, as 11390625 + 2304324 = 3375^2 + 1518^2 .

It is not a de Polignac number, because 13694949 - 2²⁰ = 12646373 is a prime.

It is a super-2 number, since 2×13694949² = 375103256225202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13694909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2347 + ... + 5735.

It is an arithmetic number, because the mean of its divisors is an integer number (1652625).

Almost surely, 2^13694949 is an apocalyptic number.

It is an amenable number.

13694949 is a deficient number, since it is larger than the sum of its proper divisors (6136551).

13694949 is a wasteful number, since it uses less digits than its factorization.

13694949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3844 (or 3841 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 13694949 is about 3700.6687233526. The cubic root of 13694949 is about 239.2508410200.

Adding to 13694949 its product of digits (209952), we get a triangular number (13904901 = T₅₂₇₃).

The spelling of 13694949 in words is "thirteen million, six hundred ninety-four thousand, nine hundred forty-nine".