13084991 has 4 divisors (see below), whose sum is σ = 13092552. Its totient is φ = 13077432.

The previous prime is 13084987. The next prime is 13084993. The reversal of 13084991 is 19948031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13084991 - 2² = 13084987 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 (13084993) 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, 245 + ... + 5121.

It is an arithmetic number, because the mean of its divisors is an integer number (3273138).

Almost surely, 2^13084991 is an apocalyptic number.

13084991 is a deficient number, since it is larger than the sum of its proper divisors (7561).

13084991 is an equidigital number, since it uses as much as digits as its factorization.

13084991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 13084991 is about 3617.3182055219. The cubic root of 13084991 is about 235.6447722434.

The spelling of 13084991 in words is "thirteen million, eighty-four thousand, nine hundred ninety-one".