4877991 has 6 divisors (see below), whose sum is σ = 7046000. Its totient is φ = 3251988.

The previous prime is 4877981. The next prime is 4878007. The reversal of 4877991 is 1997784.

It is not a de Polignac number, because 4877991 - 2⁵ = 4877959 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 (4877911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 270991 + ... + 271008.

Almost surely, 2^4877991 is an apocalyptic number.

4877991 is a deficient number, since it is larger than the sum of its proper divisors (2168009).

4877991 is a wasteful number, since it uses less digits than its factorization.

4877991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542005 (or 542002 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 4877991 is about 2208.6174408439. The cubic root of 4877991 is about 169.5952423720.

The spelling of 4877991 in words is "four million, eight hundred seventy-seven thousand, nine hundred ninety-one".