16998413 has 4 divisors (see below), whose sum is σ = 17020800. Its totient is φ = 16976028.

The previous prime is 16998409. The next prime is 16998439. The reversal of 16998413 is 31489961.

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: 31489961 = 157 ⋅200573.

It is a cyclic number.

It is not a de Polignac number, because 16998413 - 2² = 16998409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16998463) 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, 10013 + ... + 11586.

It is an arithmetic number, because the mean of its divisors is an integer number (4255200).

Almost surely, 2^16998413 is an apocalyptic number.

It is an amenable number.

16998413 is a deficient number, since it is larger than the sum of its proper divisors (22387).

16998413 is an equidigital number, since it uses as much as digits as its factorization.

16998413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22386.

The product of its digits is 46656, while the sum is 41.

The square root of 16998413 is about 4122.9131691075. The cubic root of 16998413 is about 257.1201575935.

The spelling of 16998413 in words is "sixteen million, nine hundred ninety-eight thousand, four hundred thirteen".