2870889 has 8 divisors (see below), whose sum is σ = 4374720. Its totient is φ = 1640496.

The previous prime is 2870863. The next prime is 2870893. The reversal of 2870889 is 9880782.

It is a happy number.

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

It is not a de Polignac number, because 2870889 - 2⁷ = 2870761 is a prime.

2870889 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2870889.

It is not an unprimeable number, because it can be changed into a prime (2870839) 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 7 ways as a sum of consecutive naturals, for example, 68334 + ... + 68375.

It is an arithmetic number, because the mean of its divisors is an integer number (546840).

2^2870889 is an apocalyptic number.

It is an amenable number.

2870889 is a deficient number, since it is larger than the sum of its proper divisors (1503831).

2870889 is a wasteful number, since it uses less digits than its factorization.

2870889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136719.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 2870889 is about 1694.3697943483. The cubic root of 2870889 is about 142.1255419548.

The spelling of 2870889 in words is "two million, eight hundred seventy thousand, eight hundred eighty-nine".