16198969 has 4 divisors (see below), whose sum is σ = 16903296. Its totient is φ = 15494644.

The previous prime is 16198951. The next prime is 16198991. The reversal of 16198969 is 96989161.

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: 96989161 = 251 ⋅386411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16198969 is a prime.

It is a super-2 number, since 2×16198969² = 524813193325922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16198999) 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, 352129 + ... + 352174.

It is an arithmetic number, because the mean of its divisors is an integer number (4225824).

Almost surely, 2^16198969 is an apocalyptic number.

It is an amenable number.

16198969 is a deficient number, since it is larger than the sum of its proper divisors (704327).

16198969 is an equidigital number, since it uses as much as digits as its factorization.

16198969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704326.

The product of its digits is 209952, while the sum is 49.

The square root of 16198969 is about 4024.7942804571. The cubic root of 16198969 is about 253.0244317046.

The spelling of 16198969 in words is "sixteen million, one hundred ninety-eight thousand, nine hundred sixty-nine".