16442197 has 2 divisors, whose sum is σ = 16442198. Its totient is φ = 16442196.

The previous prime is 16442177. The next prime is 16442287. The reversal of 16442197 is 79124461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14394436 + 2047761 = 3794^2 + 1431^2 .

It is a cyclic number.

It is not a de Polignac number, because 16442197 - 2¹⁵ = 16409429 is a prime.

It is a super-3 number, since 3×16442197³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16442147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221098 + 8221099.

It is an arithmetic number, because the mean of its divisors is an integer number (8221099).

Almost surely, 2^16442197 is an apocalyptic number.

It is an amenable number.

16442197 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442197 is an equidigital number, since it uses as much as digits as its factorization.

16442197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 16442197 is about 4054.8979025371. The cubic root of 16442197 is about 254.2845355420.

The spelling of 16442197 in words is "sixteen million, four hundred forty-two thousand, one hundred ninety-seven".