4992791 has 4 divisors (see below), whose sum is σ = 5063184. Its totient is φ = 4922400.

The previous prime is 4992787. The next prime is 4992809. The reversal of 4992791 is 1972994.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1972994 = 2 ⋅986497.

It is a cyclic number.

It is not a de Polignac number, because 4992791 - 2² = 4992787 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 (4992731) 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, 35090 + ... + 35231.

It is an arithmetic number, because the mean of its divisors is an integer number (1265796).

Almost surely, 2^4992791 is an apocalyptic number.

4992791 is a deficient number, since it is larger than the sum of its proper divisors (70393).

4992791 is an equidigital number, since it uses as much as digits as its factorization.

4992791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70392.

The product of its digits is 40824, while the sum is 41.

The square root of 4992791 is about 2234.4554146369. The cubic root of 4992791 is about 170.9153736956.

The spelling of 4992791 in words is "four million, nine hundred ninety-two thousand, seven hundred ninety-one".