13964789 has 4 divisors (see below), whose sum is σ = 13993056. Its totient is φ = 13936524.

The previous prime is 13964779. The next prime is 13964807. The reversal of 13964789 is 98746931.

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: 98746931 = 17 ⋅5808643.

It is a cyclic number.

It is not a de Polignac number, because 13964789 - 2⁴ = 13964773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13964729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13379 + ... + 14384.

It is an arithmetic number, because the mean of its divisors is an integer number (3498264).

Almost surely, 2^13964789 is an apocalyptic number.

It is an amenable number.

13964789 is a deficient number, since it is larger than the sum of its proper divisors (28267).

13964789 is an equidigital number, since it uses as much as digits as its factorization.

13964789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28266.

The product of its digits is 326592, while the sum is 47.

The square root of 13964789 is about 3736.9491567320. The cubic root of 13964789 is about 240.8120007871.

The spelling of 13964789 in words is "thirteen million, nine hundred sixty-four thousand, seven hundred eighty-nine".