16396669 has 4 divisors (see below), whose sum is σ = 16627680. Its totient is φ = 16165660.

The previous prime is 16396657. The next prime is 16396693. The reversal of 16396669 is 96669361.

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: 96669361 = 17 ⋅5686433.

It is a cyclic number.

It is not a de Polignac number, because 16396669 - 2¹⁵ = 16363901 is a prime.

It is a super-2 number, since 2×16396669² = 537701508591122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16396169) 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, 115399 + ... + 115540.

It is an arithmetic number, because the mean of its divisors is an integer number (4156920).

Almost surely, 2^16396669 is an apocalyptic number.

It is an amenable number.

16396669 is a deficient number, since it is larger than the sum of its proper divisors (231011).

16396669 is an equidigital number, since it uses as much as digits as its factorization.

16396669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231010.

The product of its digits is 314928, while the sum is 46.

The square root of 16396669 is about 4049.2800594674. The cubic root of 16396669 is about 254.0496162399.

The spelling of 16396669 in words is "sixteen million, three hundred ninety-six thousand, six hundred sixty-nine".