2859990 has 32 divisors (see below), whose sum is σ = 7845120. Its totient is φ = 653664.

The previous prime is 2859979. The next prime is 2859991. The reversal of 2859990 is 999582.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2859991) 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 15 ways as a sum of consecutive naturals, for example, 6600 + ... + 7019.

It is an arithmetic number, because the mean of its divisors is an integer number (245160).

2^2859990 is an apocalyptic number.

2859990 is an abundant number, since it is smaller than the sum of its proper divisors (4985130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2859990 is a wasteful number, since it uses less digits than its factorization.

2859990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13636.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 2859990 is about 1691.1504959642. The cubic root of 2859990 is about 141.9454594484.

The spelling of 2859990 in words is "two million, eight hundred fifty-nine thousand, nine hundred ninety".