4891449 has 4 divisors (see below), whose sum is σ = 6521936. Its totient is φ = 3260964.

The previous prime is 4891429. The next prime is 4891457. The reversal of 4891449 is 9441984.

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 not a de Polignac number, because 4891449 - 2⁸ = 4891193 is a prime.

It is a D-number.

It is a Duffinian number.

4891449 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4891429) 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, 815239 + ... + 815244.

It is an arithmetic number, because the mean of its divisors is an integer number (1630484).

Almost surely, 2^4891449 is an apocalyptic number.

It is an amenable number.

4891449 is a deficient number, since it is larger than the sum of its proper divisors (1630487).

4891449 is a wasteful number, since it uses less digits than its factorization.

4891449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630486.

The product of its digits is 41472, while the sum is 39.

The square root of 4891449 is about 2211.6620447076. The cubic root of 4891449 is about 169.7510658783.

The spelling of 4891449 in words is "four million, eight hundred ninety-one thousand, four hundred forty-nine".