4997791 has 4 divisors (see below), whose sum is σ = 5079784. Its totient is φ = 4915800.

The previous prime is 4997771. The next prime is 4997801. The reversal of 4997791 is 1977994.

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

It is a cyclic number.

It is not a de Polignac number, because 4997791 - 2¹³ = 4989599 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 (4997771) 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 3 ways as a sum of consecutive naturals, for example, 40905 + ... + 41026.

It is an arithmetic number, because the mean of its divisors is an integer number (1269946).

Almost surely, 2^4997791 is an apocalyptic number.

4997791 is a deficient number, since it is larger than the sum of its proper divisors (81993).

4997791 is an equidigital number, since it uses as much as digits as its factorization.

4997791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81992.

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

The square root of 4997791 is about 2235.5739755150. The cubic root of 4997791 is about 170.9724087125.

The spelling of 4997791 in words is "four million, nine hundred ninety-seven thousand, seven hundred ninety-one".