13859977 has 4 divisors (see below), whose sum is σ = 14121540. Its totient is φ = 13598416.

The previous prime is 13859933. The next prime is 13859983. The reversal of 13859977 is 77995831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3549456 + 10310521 = 1884^2 + 3211^2 .

It is a cyclic number.

It is not a de Polignac number, because 13859977 - 2¹⁹ = 13335689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13859977.

It is not an unprimeable number, because it can be changed into a prime (13859917) 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, 130702 + ... + 130807.

It is an arithmetic number, because the mean of its divisors is an integer number (3530385).

Almost surely, 2^13859977 is an apocalyptic number.

It is an amenable number.

13859977 is a deficient number, since it is larger than the sum of its proper divisors (261563).

13859977 is an equidigital number, since it uses as much as digits as its factorization.

13859977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261562.

The product of its digits is 476280, while the sum is 49.

The square root of 13859977 is about 3722.8990048079. The cubic root of 13859977 is about 240.2080198783.

The spelling of 13859977 in words is "thirteen million, eight hundred fifty-nine thousand, nine hundred seventy-seven".