13430999 has 4 divisors (see below), whose sum is σ = 13620240. Its totient is φ = 13241760.

The previous prime is 13430993. The next prime is 13431017. The reversal of 13430999 is 99903431.

13430999 = T₃₆₂ + T₃₆₃ + ... + T₅₀₃.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99903431 = 4643 ⋅21517.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13430999 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 (13430993) 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, 94514 + ... + 94655.

It is an arithmetic number, because the mean of its divisors is an integer number (3405060).

Almost surely, 2^13430999 is an apocalyptic number.

13430999 is a deficient number, since it is larger than the sum of its proper divisors (189241).

13430999 is an equidigital number, since it uses as much as digits as its factorization.

13430999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189240.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 13430999 is about 3664.8327383388. The cubic root of 13430999 is about 237.7037896289.

The spelling of 13430999 in words is "thirteen million, four hundred thirty thousand, nine hundred ninety-nine".