2992991 has 4 divisors (see below), whose sum is σ = 2996592. Its totient is φ = 2989392.

The previous prime is 2992987. The next prime is 2992999. The reversal of 2992991 is 1992992.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2992991 - 2² = 2992987 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 (2992999) 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, 155 + ... + 2451.

It is an arithmetic number, because the mean of its divisors is an integer number (749148).

2^2992991 is an apocalyptic number.

2992991 is a deficient number, since it is larger than the sum of its proper divisors (3601).

2992991 is a wasteful number, since it uses less digits than its factorization.

2992991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600.

The product of its digits is 26244, while the sum is 41.

The square root of 2992991 is about 1730.0263003781. The cubic root of 2992991 is about 144.1125502538.

Subtracting from 2992991 its reverse (1992992), we obtain a palindrome (999999).

The spelling of 2992991 in words is "two million, nine hundred ninety-two thousand, nine hundred ninety-one".