4991126 has 8 divisors (see below), whose sum is σ = 8556240. Its totient is φ = 2139048.

The previous prime is 4991123. The next prime is 4991131. The reversal of 4991126 is 6211994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4991126² = 49822677495752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4991092 and 4991101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178241 + ... + 178268.

It is an arithmetic number, because the mean of its divisors is an integer number (1069530).

Almost surely, 2^4991126 is an apocalyptic number.

4991126 is a deficient number, since it is larger than the sum of its proper divisors (3565114).

4991126 is a wasteful number, since it uses less digits than its factorization.

4991126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356518.

The product of its digits is 3888, while the sum is 32.

The square root of 4991126 is about 2234.0828095664. The cubic root of 4991126 is about 170.8963725840.

The spelling of 4991126 in words is "four million, nine hundred ninety-one thousand, one hundred twenty-six".