13887789 has 8 divisors (see below), whose sum is σ = 18535680. Its totient is φ = 9249216.

The previous prime is 13887761. The next prime is 13887817. The reversal of 13887789 is 98778831.

13887789 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13887761) and next prime (13887817).

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

It is not a de Polignac number, because 13887789 - 2¹² = 13883693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13887719) 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, 2709 + ... + 5925.

It is an arithmetic number, because the mean of its divisors is an integer number (2316960).

Almost surely, 2^13887789 is an apocalyptic number.

It is an amenable number.

13887789 is a deficient number, since it is larger than the sum of its proper divisors (4647891).

13887789 is a wasteful number, since it uses less digits than its factorization.

13887789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4659.

The product of its digits is 677376, while the sum is 51.

The square root of 13887789 is about 3726.6323939986. The cubic root of 13887789 is about 240.3685829600.

The spelling of 13887789 in words is "thirteen million, eight hundred eighty-seven thousand, seven hundred eighty-nine".