16491449 has 16 divisors (see below), whose sum is σ = 18849600. Its totient is φ = 14302656.

The previous prime is 16491443. The next prime is 16491467. The reversal of 16491449 is 94419461.

It is a cyclic number.

It is not a de Polignac number, because 16491449 - 2¹² = 16487353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16491443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44027 + ... + 44399.

It is an arithmetic number, because the mean of its divisors is an integer number (1178100).

Almost surely, 2^16491449 is an apocalyptic number.

16491449 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16491449 is a deficient number, since it is larger than the sum of its proper divisors (2358151).

16491449 is a wasteful number, since it uses less digits than its factorization.

16491449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584.

The product of its digits is 31104, while the sum is 38.

The square root of 16491449 is about 4060.9665105736. The cubic root of 16491449 is about 254.5381824569.

The spelling of 16491449 in words is "sixteen million, four hundred ninety-one thousand, four hundred forty-nine".