16926397 has 4 divisors (see below), whose sum is σ = 17817280. Its totient is φ = 16035516.

The previous prime is 16926361. The next prime is 16926421. The reversal of 16926397 is 79362961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79362961 = 647 ⋅122663.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16926397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16926307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445413 + ... + 445450.

It is an arithmetic number, because the mean of its divisors is an integer number (4454320).

Almost surely, 2^16926397 is an apocalyptic number.

It is an amenable number.

16926397 is a deficient number, since it is larger than the sum of its proper divisors (890883).

16926397 is an equidigital number, since it uses as much as digits as its factorization.

16926397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890882.

The product of its digits is 122472, while the sum is 43.

The square root of 16926397 is about 4114.1702687176. The cubic root of 16926397 is about 256.7565358727.

The spelling of 16926397 in words is "sixteen million, nine hundred twenty-six thousand, three hundred ninety-seven".