4991797 has 8 divisors (see below), whose sum is σ = 5104512. Its totient is φ = 4880400.

The previous prime is 4991771. The next prime is 4991801. The reversal of 4991797 is 7971994.

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

It is a cyclic number.

It is not a de Polignac number, because 4991797 - 2¹⁹ = 4467509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11647 + ... + 12067.

It is an arithmetic number, because the mean of its divisors is an integer number (638064).

Almost surely, 2^4991797 is an apocalyptic number.

It is an amenable number.

4991797 is a deficient number, since it is larger than the sum of its proper divisors (112715).

4991797 is a wasteful number, since it uses less digits than its factorization.

4991797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659.

The product of its digits is 142884, while the sum is 46.

The square root of 4991797 is about 2234.2329780039. The cubic root of 4991797 is about 170.9040305973.

The spelling of 4991797 in words is "four million, nine hundred ninety-one thousand, seven hundred ninety-seven".