2991994 has 8 divisors (see below), whose sum is σ = 4506228. Its totient is φ = 1489920.

The previous prime is 2991971. The next prime is 2992007. The reversal of 2991994 is 4991992.

It can be written as a sum of positive squares in 2 ways, for example, as 2205225 + 786769 = 1485^2 + 887^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2991994.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2397 + ... + 3424.

2^2991994 is an apocalyptic number.

2991994 is a deficient number, since it is larger than the sum of its proper divisors (1514234).

2991994 is a wasteful number, since it uses less digits than its factorization.

2991994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6080.

The product of its digits is 52488, while the sum is 43.

The square root of 2991994 is about 1729.7381304695. The cubic root of 2991994 is about 144.0965466229.

The spelling of 2991994 in words is "two million, nine hundred ninety-one thousand, nine hundred ninety-four".