16489423 has 2 divisors, whose sum is σ = 16489424. Its totient is φ = 16489422.

The previous prime is 16489409. The next prime is 16489441. The reversal of 16489423 is 32498461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16489423 - 2⁵ = 16489391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16489453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8244711 + 8244712.

It is an arithmetic number, because the mean of its divisors is an integer number (8244712).

Almost surely, 2^16489423 is an apocalyptic number.

16489423 is a deficient number, since it is larger than the sum of its proper divisors (1).

16489423 is an equidigital number, since it uses as much as digits as its factorization.

16489423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 37.

The square root of 16489423 is about 4060.7170549055. The cubic root of 16489423 is about 254.5277585603.

The spelling of 16489423 in words is "sixteen million, four hundred eighty-nine thousand, four hundred twenty-three".