4992991 has 6 divisors (see below), whose sum is σ = 5269992. Its totient is φ = 4729860.

The previous prime is 4992973. The next prime is 4992997. The reversal of 4992991 is 1992994.

It is not a de Polignac number, because 4992991 - 2¹³ = 4984799 is a prime.

It is the 2235-th Hogben number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4992997) by changing a digit.

It is a nontrivial repunit in base 2234.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6555 + ... + 7276.

It is an arithmetic number, because the mean of its divisors is an integer number (878332).

Almost surely, 2^4992991 is an apocalyptic number.

4992991 is a deficient number, since it is larger than the sum of its proper divisors (277001).

4992991 is a wasteful number, since it uses less digits than its factorization.

4992991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13869 (or 13850 counting only the distinct ones).

The product of its digits is 52488, while the sum is 43.

The square root of 4992991 is about 2234.5001678228. The cubic root of 4992991 is about 170.9176558272.

The spelling of 4992991 in words is "four million, nine hundred ninety-two thousand, nine hundred ninety-one".