13789939 has 2 divisors, whose sum is σ = 13789940. Its totient is φ = 13789938.

The previous prime is 13789933. The next prime is 13789957. The reversal of 13789939 is 93998731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13789939 - 2¹⁵ = 13757171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13789892 and 13789901.

It is not a weakly prime, because it can be changed into another prime (13789933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6894969 + 6894970.

It is an arithmetic number, because the mean of its divisors is an integer number (6894970).

Almost surely, 2^13789939 is an apocalyptic number.

13789939 is a deficient number, since it is larger than the sum of its proper divisors (1).

13789939 is an equidigital number, since it uses as much as digits as its factorization.

13789939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 49.

The square root of 13789939 is about 3713.4807122160. The cubic root of 13789939 is about 239.8027256210.

The spelling of 13789939 in words is "thirteen million, seven hundred eighty-nine thousand, nine hundred thirty-nine".