2999859 has 4 divisors (see below), whose sum is σ = 3999816. Its totient is φ = 1999904.

The previous prime is 2999851. The next prime is 2999863. The reversal of 2999859 is 9589992.

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 2999859 - 2³ = 2999851 is a prime.

It is a D-number.

2999859 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2999851) 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, 499974 + ... + 499979.

It is an arithmetic number, because the mean of its divisors is an integer number (999954).

2^2999859 is an apocalyptic number.

2999859 is a deficient number, since it is larger than the sum of its proper divisors (999957).

2999859 is an equidigital number, since it uses as much as digits as its factorization.

2999859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999956.

The product of its digits is 524880, while the sum is 51.

The square root of 2999859 is about 1732.0101038966. The cubic root of 2999859 is about 144.2226974710. Note that the first 3 decimals are identical.

The spelling of 2999859 in words is "two million, nine hundred ninety-nine thousand, eight hundred fifty-nine".