2989857 has 16 divisors (see below), whose sum is σ = 4433408. Its totient is φ = 1779840.

The previous prime is 2989849. The next prime is 2989879. The reversal of 2989857 is 7589892.

It is a happy number.

It is not a de Polignac number, because 2989857 - 2³ = 2989849 is a prime.

It is a Duffinian number.

Its product of digits (362880) is a multiple of the sum of its prime divisors (2520).

It is not an unprimeable number, because it can be changed into a prime (2989757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28 + ... + 2445.

It is an arithmetic number, because the mean of its divisors is an integer number (277088).

2^2989857 is an apocalyptic number.

It is an amenable number.

2989857 is a deficient number, since it is larger than the sum of its proper divisors (1443551).

2989857 is a wasteful number, since it uses less digits than its factorization.

2989857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520.

The product of its digits is 362880, while the sum is 48.

The square root of 2989857 is about 1729.1202965670. The cubic root of 2989857 is about 144.0622319750.

The spelling of 2989857 in words is "two million, nine hundred eighty-nine thousand, eight hundred fifty-seven".