4991975 has 6 divisors (see below), whose sum is σ = 6190080. Its totient is φ = 3993560.

The previous prime is 4991963. The next prime is 4991977. The reversal of 4991975 is 5791994.

4991975 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4991975 - 2⁸ = 4991719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99815 + ... + 99864.

It is an arithmetic number, because the mean of its divisors is an integer number (1031680).

Almost surely, 2^4991975 is an apocalyptic number.

4991975 is a deficient number, since it is larger than the sum of its proper divisors (1198105).

4991975 is a wasteful number, since it uses less digits than its factorization.

4991975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199689 (or 199684 counting only the distinct ones).

The product of its digits is 102060, while the sum is 44.

The square root of 4991975 is about 2234.2728123486. The cubic root of 4991975 is about 170.9060619670.

It can be divided in two parts, 49919 and 75, that added together give a palindrome (49994).

The spelling of 4991975 in words is "four million, nine hundred ninety-one thousand, nine hundred seventy-five".