2990807 has 4 divisors (see below), whose sum is σ = 2996400. Its totient is φ = 2985216.

The previous prime is 2990797. The next prime is 2990831. The reversal of 2990807 is 7080992.

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 2990807 - 2⁴ = 2990791 is a prime.

It is a super-2 number, since 2×2990807² = 17889853022498, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2990837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1898 + ... + 3095.

It is an arithmetic number, because the mean of its divisors is an integer number (749100).

2^2990807 is an apocalyptic number.

2990807 is a deficient number, since it is larger than the sum of its proper divisors (5593).

2990807 is an equidigital number, since it uses as much as digits as its factorization.

2990807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5592.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 2990807 is about 1729.3949809110. The cubic root of 2990807 is about 144.0774885160.

The spelling of 2990807 in words is "two million, nine hundred ninety thousand, eight hundred seven".