13889777 has 8 divisors (see below), whose sum is σ = 15295392. Its totient is φ = 12508000.

The previous prime is 13889749. The next prime is 13889789. The reversal of 13889777 is 77798831.

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 13889777 - 2⁶ = 13889713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13889717) 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, 4724 + ... + 7077.

It is an arithmetic number, because the mean of its divisors is an integer number (1911924).

Almost surely, 2^13889777 is an apocalyptic number.

It is an amenable number.

13889777 is a deficient number, since it is larger than the sum of its proper divisors (1405615).

13889777 is a wasteful number, since it uses less digits than its factorization.

13889777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11919.

The product of its digits is 592704, while the sum is 50.

The square root of 13889777 is about 3726.8991132039. The cubic root of 13889777 is about 240.3800517868.

The spelling of 13889777 in words is "thirteen million, eight hundred eighty-nine thousand, seven hundred seventy-seven".