4991022 has 12 divisors (see below), whose sum is σ = 10813920. Its totient is φ = 1663668.

The previous prime is 4991011. The next prime is 4991029. The reversal of 4991022 is 2201994.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138622 + ... + 138657.

It is an arithmetic number, because the mean of its divisors is an integer number (901160).

Almost surely, 2^4991022 is an apocalyptic number.

4991022 is an abundant number, since it is smaller than the sum of its proper divisors (5822898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4991022 is a wasteful number, since it uses less digits than its factorization.

4991022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277287 (or 277284 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 4991022 is about 2234.0595336741. The cubic root of 4991022 is about 170.8951855876.

It can be divided in two parts, 499 and 1022, that added together give a square (1521 = 39²).

The spelling of 4991022 in words is "four million, nine hundred ninety-one thousand, twenty-two".