13409139 has 8 divisors (see below), whose sum is σ = 17903872. Its totient is φ = 8926920.

The previous prime is 13409119. The next prime is 13409153. The reversal of 13409139 is 93190431.

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

It is not a de Polignac number, because 13409139 - 2⁸ = 13408883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13409119) 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, 247 + ... + 5184.

It is an arithmetic number, because the mean of its divisors is an integer number (2237984).

Almost surely, 2^13409139 is an apocalyptic number.

13409139 is a deficient number, since it is larger than the sum of its proper divisors (4494733).

13409139 is an equidigital number, since it uses as much as digits as its factorization.

13409139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6257.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 13409139 is about 3661.8491230525. The cubic root of 13409139 is about 237.5747591060.

The spelling of 13409139 in words is "thirteen million, four hundred nine thousand, one hundred thirty-nine".