16426973 has 2 divisors, whose sum is σ = 16426974. Its totient is φ = 16426972.

The previous prime is 16426951. The next prime is 16427003. The reversal of 16426973 is 37962461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9467929 + 6959044 = 3077^2 + 2638^2 .

It is a cyclic number.

It is not a de Polignac number, because 16426973 - 2¹² = 16422877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16426073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8213486 + 8213487.

It is an arithmetic number, because the mean of its divisors is an integer number (8213487).

Almost surely, 2^16426973 is an apocalyptic number.

It is an amenable number.

16426973 is a deficient number, since it is larger than the sum of its proper divisors (1).

16426973 is an equidigital number, since it uses as much as digits as its factorization.

16426973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 16426973 is about 4053.0202318765. The cubic root of 16426973 is about 254.2060297481.

The spelling of 16426973 in words is "sixteen million, four hundred twenty-six thousand, nine hundred seventy-three".