14391399 has 32 divisors (see below), whose sum is σ = 22247424. Its totient is φ = 8189280.

The previous prime is 14391397. The next prime is 14391407. The reversal of 14391399 is 99319341.

Added to its reverse (99319341) it gives a triangular number (113710740 = T₁₅₀₈₀).

It is not a de Polignac number, because 14391399 - 2¹ = 14391397 is a prime.

It is a super-2 number, since 2×14391399² = 414224730354402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14391397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50712 + ... + 50994.

It is an arithmetic number, because the mean of its divisors is an integer number (695232).

Almost surely, 2^14391399 is an apocalyptic number.

14391399 is a deficient number, since it is larger than the sum of its proper divisors (7856025).

14391399 is a wasteful number, since it uses less digits than its factorization.

14391399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387.

The product of its digits is 26244, while the sum is 39.

The square root of 14391399 is about 3793.5997416702. The cubic root of 14391399 is about 243.2396321950.

Adding to 14391399 its reverse (99319341), we get a triangular number (113710740 = T₁₅₀₈₀).

The spelling of 14391399 in words is "fourteen million, three hundred ninety-one thousand, three hundred ninety-nine".