2990971 has 4 divisors (see below), whose sum is σ = 3019032. Its totient is φ = 2962912.

The previous prime is 2990957. The next prime is 2990983. The reversal of 2990971 is 1790992.

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 2990971 - 2⁹ = 2990459 is a prime.

It is a Duffinian number.

2990971 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2990971.

It is not an unprimeable number, because it can be changed into a prime (2990941) 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, 13870 + ... + 14083.

It is an arithmetic number, because the mean of its divisors is an integer number (754758).

2^2990971 is an apocalyptic number.

2990971 is a deficient number, since it is larger than the sum of its proper divisors (28061).

2990971 is a wasteful number, since it uses less digits than its factorization.

2990971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28060.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 2990971 is about 1729.4423956871. The cubic root of 2990971 is about 144.0801219498.

The spelling of 2990971 in words is "two million, nine hundred ninety thousand, nine hundred seventy-one".