13428491 has 2 divisors, whose sum is σ = 13428492. Its totient is φ = 13428490.

The previous prime is 13428461. The next prime is 13428509. The reversal of 13428491 is 19482431.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (19482431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13428491 - 2¹⁴ = 13412107 is a prime.

It is a Chen prime.

It is equal to p₈₇₅₃₀₉ and since 13428491 and 875309 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13428431) 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 as a sum of consecutive naturals, namely, 6714245 + 6714246.

It is an arithmetic number, because the mean of its divisors is an integer number (6714246).

Almost surely, 2^13428491 is an apocalyptic number.

13428491 is a deficient number, since it is larger than the sum of its proper divisors (1).

13428491 is an equidigital number, since it uses as much as digits as its factorization.

13428491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 13428491 is about 3664.4905512226. The cubic root of 13428491 is about 237.6889930573.

The spelling of 13428491 in words is "thirteen million, four hundred twenty-eight thousand, four hundred ninety-one".