13919399 has 8 divisors (see below), whose sum is σ = 15019872. Its totient is φ = 12823200.

The previous prime is 13919387. The next prime is 13919417. The reversal of 13919399 is 99391931.

13919399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13919399 - 2⁴ = 13919383 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 (13919329) 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, 10049 + ... + 11349.

It is an arithmetic number, because the mean of its divisors is an integer number (1877484).

Almost surely, 2^13919399 is an apocalyptic number.

13919399 is a deficient number, since it is larger than the sum of its proper divisors (1100473).

13919399 is a wasteful number, since it uses less digits than its factorization.

13919399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137.

The product of its digits is 59049, while the sum is 44.

The square root of 13919399 is about 3730.8710779120. The cubic root of 13919399 is about 240.5508124361.

The spelling of 13919399 in words is "thirteen million, nine hundred nineteen thousand, three hundred ninety-nine".