13869797 has 4 divisors (see below), whose sum is σ = 13979136. Its totient is φ = 13760460.

The previous prime is 13869769. The next prime is 13869799. The reversal of 13869797 is 79796831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79796831 = 1091 ⋅73141.

It is a cyclic number.

It is not a de Polignac number, because 13869797 - 2¹⁰ = 13868773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13869799) 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 3 ways as a sum of consecutive naturals, for example, 54479 + ... + 54732.

It is an arithmetic number, because the mean of its divisors is an integer number (3494784).

Almost surely, 2^13869797 is an apocalyptic number.

It is an amenable number.

13869797 is a deficient number, since it is larger than the sum of its proper divisors (109339).

13869797 is a wasteful number, since it uses less digits than its factorization.

13869797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109338.

The product of its digits is 571536, while the sum is 50.

The square root of 13869797 is about 3724.2176359606. The cubic root of 13869797 is about 240.2647368046.

The spelling of 13869797 in words is "thirteen million, eight hundred sixty-nine thousand, seven hundred ninety-seven".