13942789 has 16 divisors (see below), whose sum is σ = 16998400. Its totient is φ = 11170224.

The previous prime is 13942783. The next prime is 13942811. The reversal of 13942789 is 98724931.

It is a cyclic number.

It is not a de Polignac number, because 13942789 - 2⁵ = 13942757 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 (13942783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9844 + ... + 11170.

It is an arithmetic number, because the mean of its divisors is an integer number (1062400).

Almost surely, 2^13942789 is an apocalyptic number.

13942789 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13942789 is a deficient number, since it is larger than the sum of its proper divisors (3055611).

13942789 is a wasteful number, since it uses less digits than its factorization.

13942789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432.

The product of its digits is 108864, while the sum is 43.

The square root of 13942789 is about 3734.0044188512. The cubic root of 13942789 is about 240.6854766526.

It can be divided in two parts, 1394 and 2789, that multiplied together give a triangular number (3887866 = T₂₇₈₈).

The spelling of 13942789 in words is "thirteen million, nine hundred forty-two thousand, seven hundred eighty-nine".