13450391 has 4 divisors (see below), whose sum is σ = 13508352. Its totient is φ = 13392432.

The previous prime is 13450369. The next prime is 13450397. The reversal of 13450391 is 19305431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13450391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13450391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13450397) 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, 28631 + ... + 29096.

It is an arithmetic number, because the mean of its divisors is an integer number (3377088).

Almost surely, 2^13450391 is an apocalyptic number.

13450391 is a deficient number, since it is larger than the sum of its proper divisors (57961).

13450391 is an equidigital number, since it uses as much as digits as its factorization.

13450391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57960.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 13450391 is about 3667.4774709601. The cubic root of 13450391 is about 237.8181354346.

The spelling of 13450391 in words is "thirteen million, four hundred fifty thousand, three hundred ninety-one".