2990243 has 4 divisors (see below), whose sum is σ = 2998320. Its totient is φ = 2982168.

The previous prime is 2990237. The next prime is 2990279. The reversal of 2990243 is 3420992.

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 2990243 - 2⁴ = 2990227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2990213) 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, 3455 + ... + 4232.

It is an arithmetic number, because the mean of its divisors is an integer number (749580).

2^2990243 is an apocalyptic number.

2990243 is a deficient number, since it is larger than the sum of its proper divisors (8077).

2990243 is an equidigital number, since it uses as much as digits as its factorization.

2990243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8076.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 2990243 is about 1729.2319104157. The cubic root of 2990243 is about 144.0684313382.

The spelling of 2990243 in words is "two million, nine hundred ninety thousand, two hundred forty-three".