4991836 has 6 divisors (see below), whose sum is σ = 8735720. Its totient is φ = 2495916.

The previous prime is 4991803. The next prime is 4991839. The reversal of 4991836 is 6381994.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991839) 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 as a sum of consecutive naturals, namely, 623976 + ... + 623983.

Almost surely, 2^4991836 is an apocalyptic number.

It is an amenable number.

4991836 is a deficient number, since it is larger than the sum of its proper divisors (3743884).

4991836 is a wasteful number, since it uses less digits than its factorization.

4991836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247963 (or 1247961 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 4991836 is about 2234.2417058143. The cubic root of 4991836 is about 170.9044756768.

The spelling of 4991836 in words is "four million, nine hundred ninety-one thousand, eight hundred thirty-six".