2899890 has 48 divisors (see below), whose sum is σ = 8618688. Its totient is φ = 662688.

The previous prime is 2899873. The next prime is 2899903. The reversal of 2899890 is 989982.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1672 + ... + 2931.

It is an arithmetic number, because the mean of its divisors is an integer number (179556).

2^2899890 is an apocalyptic number.

2899890 is an abundant number, since it is smaller than the sum of its proper divisors (5718798).

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

2899890 is a wasteful number, since it uses less digits than its factorization.

2899890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623 (or 4620 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 2899890 is about 1702.9063391743. The cubic root of 2899890 is about 142.6025116484.

The spelling of 2899890 in words is "two million, eight hundred ninety-nine thousand, eight hundred ninety".