13697949 has 16 divisors (see below), whose sum is σ = 19348992. Its totient is φ = 8601648.

The previous prime is 13697933. The next prime is 13697969. The reversal of 13697949 is 94979631.

It is not a de Polignac number, because 13697949 - 2⁴ = 13697933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13697898 and 13697907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13697969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3142 + ... + 6104.

It is an arithmetic number, because the mean of its divisors is an integer number (1209312).

Almost surely, 2^13697949 is an apocalyptic number.

It is an amenable number.

13697949 is a deficient number, since it is larger than the sum of its proper divisors (5651043).

13697949 is a wasteful number, since it uses less digits than its factorization.

13697949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056.

The product of its digits is 367416, while the sum is 48.

The square root of 13697949 is about 3701.0740333044. The cubic root of 13697949 is about 239.2683097505.

The spelling of 13697949 in words is "thirteen million, six hundred ninety-seven thousand, nine hundred forty-nine".