13040099 has 4 divisors (see below), whose sum is σ = 13726440. Its totient is φ = 12353760.

The previous prime is 13040089. The next prime is 13040101. The reversal of 13040099 is 99004031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13040099 - 2⁸ = 13039843 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13040029) 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, 343142 + ... + 343179.

It is an arithmetic number, because the mean of its divisors is an integer number (3431610).

Almost surely, 2^13040099 is an apocalyptic number.

13040099 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13040099 is a deficient number, since it is larger than the sum of its proper divisors (686341).

13040099 is an equidigital number, since it uses as much as digits as its factorization.

13040099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686340.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 13040099 is about 3611.1077247847. The cubic root of 13040099 is about 235.3749800344.

The spelling of 13040099 in words is "thirteen million, forty thousand, ninety-nine".