13400291 has 4 divisors (see below), whose sum is σ = 13862400. Its totient is φ = 12938184.

The previous prime is 13400281. The next prime is 13400341. The reversal of 13400291 is 19200431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19200431 = 19 ⋅1010549.

It is a cyclic number.

It is not a de Polignac number, because 13400291 - 2⁶ = 13400227 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (13400251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231011 + ... + 231068.

It is an arithmetic number, because the mean of its divisors is an integer number (3465600).

Almost surely, 2^13400291 is an apocalyptic number.

13400291 is a deficient number, since it is larger than the sum of its proper divisors (462109).

13400291 is an equidigital number, since it uses as much as digits as its factorization.

13400291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462108.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 13400291 is about 3660.6407908999. The cubic root of 13400291 is about 237.5224931605.

The spelling of 13400291 in words is "thirteen million, four hundred thousand, two hundred ninety-one".