17970399 has 6 divisors (see below), whose sum is σ = 25957256. Its totient is φ = 11980260.

The previous prime is 17970361. The next prime is 17970437. The reversal of 17970399 is 99307971.

It is an interprime number because it is at equal distance from previous prime (17970361) and next prime (17970437).

It is not a de Polignac number, because 17970399 - 2¹¹ = 17968351 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17970319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 998347 + ... + 998364.

Almost surely, 2^17970399 is an apocalyptic number.

17970399 is a deficient number, since it is larger than the sum of its proper divisors (7986857).

17970399 is a wasteful number, since it uses less digits than its factorization.

17970399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996717 (or 1996714 counting only the distinct ones).

The product of its (nonzero) digits is 107163, while the sum is 45.

The square root of 17970399 is about 4239.1507404196. The cubic root of 17970399 is about 261.9304002916.

The spelling of 17970399 in words is "seventeen million, nine hundred seventy thousand, three hundred ninety-nine".