16942397 has 2 divisors, whose sum is σ = 16942398. Its totient is φ = 16942396.

The previous prime is 16942391. The next prime is 16942403. The reversal of 16942397 is 79324961.

It is a balanced prime because it is at equal distance from previous prime (16942391) and next prime (16942403).

It can be written as a sum of positive squares in only one way, i.e., 16736281 + 206116 = 4091^2 + 454^2 .

It is an emirp because it is prime and its reverse (79324961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16942397 - 2¹⁰ = 16941373 is a prime.

It is a super-2 number, since 2×16942397² = 574089632211218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16942391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8471198 + 8471199.

It is an arithmetic number, because the mean of its divisors is an integer number (8471199).

Almost surely, 2^16942397 is an apocalyptic number.

It is an amenable number.

16942397 is a deficient number, since it is larger than the sum of its proper divisors (1).

16942397 is an equidigital number, since it uses as much as digits as its factorization.

16942397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 16942397 is about 4116.1143084224. The cubic root of 16942397 is about 256.8374117345.

The spelling of 16942397 in words is "sixteen million, nine hundred forty-two thousand, three hundred ninety-seven".