16446749 has 4 divisors (see below), whose sum is σ = 17941920. Its totient is φ = 14951580.

The previous prime is 16446737. The next prime is 16446751. The reversal of 16446749 is 94764461.

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: 94764461 = 11 ⋅8614951.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16446749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16446779) 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, 747569 + ... + 747590.

It is an arithmetic number, because the mean of its divisors is an integer number (4485480).

Almost surely, 2^16446749 is an apocalyptic number.

It is an amenable number.

16446749 is a deficient number, since it is larger than the sum of its proper divisors (1495171).

16446749 is a wasteful number, since it uses less digits than its factorization.

16446749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495170.

The product of its digits is 145152, while the sum is 41.

The square root of 16446749 is about 4055.4591601938. The cubic root of 16446749 is about 254.3079994867.

The spelling of 16446749 in words is "sixteen million, four hundred forty-six thousand, seven hundred forty-nine".