16424491 has 2 divisors, whose sum is σ = 16424492. Its totient is φ = 16424490.

The previous prime is 16424467. The next prime is 16424509. The reversal of 16424491 is 19442461.

It is a strong prime.

It is an emirp because it is prime and its reverse (19442461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16424491 - 2¹¹ = 16422443 is a prime.

It is not a weakly prime, because it can be changed into another prime (16424591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8212245 + 8212246.

It is an arithmetic number, because the mean of its divisors is an integer number (8212246).

Almost surely, 2^16424491 is an apocalyptic number.

16424491 is a deficient number, since it is larger than the sum of its proper divisors (1).

16424491 is an equidigital number, since it uses as much as digits as its factorization.

16424491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 16424491 is about 4052.7140288947. The cubic root of 16424491 is about 254.1932261893.

The spelling of 16424491 in words is "sixteen million, four hundred twenty-four thousand, four hundred ninety-one".