16309249 has 4 divisors (see below), whose sum is σ = 17791920. Its totient is φ = 14826580.

The previous prime is 16309243. The next prime is 16309283. The reversal of 16309249 is 94290361.

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: 94290361 = 11 ⋅8571851.

It is a cyclic number.

It is not a de Polignac number, because 16309249 - 2⁵ = 16309217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16309243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741319 + ... + 741340.

It is an arithmetic number, because the mean of its divisors is an integer number (4447980).

Almost surely, 2^16309249 is an apocalyptic number.

It is an amenable number.

16309249 is a deficient number, since it is larger than the sum of its proper divisors (1482671).

16309249 is a wasteful number, since it uses less digits than its factorization.

16309249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482670.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 16309249 is about 4038.4711216004. The cubic root of 16309249 is about 253.5973169665.

The spelling of 16309249 in words is "sixteen million, three hundred nine thousand, two hundred forty-nine".