16970917 has 4 divisors (see below), whose sum is σ = 17210016. Its totient is φ = 16731820.

The previous prime is 16970911. The next prime is 16970953. The reversal of 16970917 is 71907961.

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: 71907961 = 59 ⋅1218779.

It is a cyclic number.

It is not a de Polignac number, because 16970917 - 2³ = 16970909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16970917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16970911) 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, 119443 + ... + 119584.

It is an arithmetic number, because the mean of its divisors is an integer number (4302504).

Almost surely, 2^16970917 is an apocalyptic number.

It is an amenable number.

16970917 is a deficient number, since it is larger than the sum of its proper divisors (239099).

16970917 is an equidigital number, since it uses as much as digits as its factorization.

16970917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239098.

The product of its (nonzero) digits is 23814, while the sum is 40.

The square root of 16970917 is about 4119.5772841397. The cubic root of 16970917 is about 256.9814467774.

The spelling of 16970917 in words is "sixteen million, nine hundred seventy thousand, nine hundred seventeen".