13491403 has 2 divisors, whose sum is σ = 13491404. Its totient is φ = 13491402.

The previous prime is 13491389. The next prime is 13491433. The reversal of 13491403 is 30419431.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13491403 - 2⁵ = 13491371 is a prime.

It is not a weakly prime, because it can be changed into another prime (13491433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6745701 + 6745702.

It is an arithmetic number, because the mean of its divisors is an integer number (6745702).

Almost surely, 2^13491403 is an apocalyptic number.

13491403 is a deficient number, since it is larger than the sum of its proper divisors (1).

13491403 is an equidigital number, since it uses as much as digits as its factorization.

13491403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 13491403 is about 3673.0645243448. The cubic root of 13491403 is about 238.0596030370.

The spelling of 13491403 in words is "thirteen million, four hundred ninety-one thousand, four hundred three".