4991127 has 4 divisors (see below), whose sum is σ = 6654840. Its totient is φ = 3327416.

The previous prime is 4991123. The next prime is 4991131. The reversal of 4991127 is 7211994.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4991123) and next prime (4991131).

It is a cyclic number.

It is not a de Polignac number, because 4991127 - 2² = 4991123 is a prime.

It is a super-2 number, since 2×4991127² = 49822697460258, which contains 22 as substring.

It is a D-number.

4991127 is a lucky number.

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, 831852 + ... + 831857.

It is an arithmetic number, because the mean of its divisors is an integer number (1663710).

Almost surely, 2^4991127 is an apocalyptic number.

4991127 is a deficient number, since it is larger than the sum of its proper divisors (1663713).

4991127 is a wasteful number, since it uses less digits than its factorization.

4991127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663712.

The product of its digits is 4536, while the sum is 33.

The square root of 4991127 is about 2234.0830333719. The cubic root of 4991127 is about 170.8963839974.

The spelling of 4991127 in words is "four million, nine hundred ninety-one thousand, one hundred twenty-seven".