2995991 has 4 divisors (see below), whose sum is σ = 3015984. Its totient is φ = 2976000.

The previous prime is 2995981. The next prime is 2995997. The reversal of 2995991 is 1995992.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2995991 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 (2995997) 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, 9770 + ... + 10071.

It is an arithmetic number, because the mean of its divisors is an integer number (753996).

2^2995991 is an apocalyptic number.

2995991 is a deficient number, since it is larger than the sum of its proper divisors (19993).

2995991 is a wasteful number, since it uses less digits than its factorization.

2995991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19992.

The product of its digits is 65610, while the sum is 44.

The square root of 2995991 is about 1730.8931220616. The cubic root of 2995991 is about 144.1606841864.

Subtracting from 2995991 its reverse (1995992), we obtain a palindrome (999999).

The spelling of 2995991 in words is "two million, nine hundred ninety-five thousand, nine hundred ninety-one".