13869805 has 8 divisors (see below), whose sum is σ = 17367552. Its totient is φ = 10613328.

The previous prime is 13869799. The next prime is 13869809. The reversal of 13869805 is 50896831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13869805 - 2⁹ = 13869293 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 (13869809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60189 + ... + 60418.

It is an arithmetic number, because the mean of its divisors is an integer number (2170944).

Almost surely, 2^13869805 is an apocalyptic number.

It is an amenable number.

13869805 is a deficient number, since it is larger than the sum of its proper divisors (3497747).

13869805 is a wasteful number, since it uses less digits than its factorization.

13869805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120635.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 13869805 is about 3724.2187100115. The cubic root of 13869805 is about 240.2647829989.

The spelling of 13869805 in words is "thirteen million, eight hundred sixty-nine thousand, eight hundred five".