17429993 has 4 divisors (see below), whose sum is σ = 19920000. Its totient is φ = 14939988.

The previous prime is 17429989. The next prime is 17429999. The reversal of 17429993 is 39992471.

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: 39992471 = 83 ⋅481837.

It is not a de Polignac number, because 17429993 - 2² = 17429989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17429999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1244993 + ... + 1245006.

It is an arithmetic number, because the mean of its divisors is an integer number (4980000).

Almost surely, 2^17429993 is an apocalyptic number.

It is an amenable number.

17429993 is a deficient number, since it is larger than the sum of its proper divisors (2490007).

17429993 is an equidigital number, since it uses as much as digits as its factorization.

17429993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490006.

The product of its digits is 122472, while the sum is 44.

The square root of 17429993 is about 4174.9243106912. The cubic root of 17429993 is about 259.2780415264.

The spelling of 17429993 in words is "seventeen million, four hundred twenty-nine thousand, nine hundred ninety-three".