16345969 has 4 divisors (see below), whose sum is σ = 16552960. Its totient is φ = 16138980.

The previous prime is 16345961. The next prime is 16345981. The reversal of 16345969 is 96954361.

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.

It is a cyclic number.

It is not a de Polignac number, because 16345969 - 2³ = 16345961 is a prime.

It is a super-2 number, since 2×16345969² = 534381405097922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16345961) 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, 103377 + ... + 103534.

It is an arithmetic number, because the mean of its divisors is an integer number (4138240).

Almost surely, 2^16345969 is an apocalyptic number.

It is an amenable number.

16345969 is a deficient number, since it is larger than the sum of its proper divisors (206991).

16345969 is an equidigital number, since it uses as much as digits as its factorization.

16345969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206990.

The product of its digits is 174960, while the sum is 43.

The square root of 16345969 is about 4043.0148404378. The cubic root of 16345969 is about 253.7874976739.

It can be divided in two parts, 163 and 45969, that multiplied together give a palindrome (7492947).

The spelling of 16345969 in words is "sixteen million, three hundred forty-five thousand, nine hundred sixty-nine".