2909798 has 4 divisors (see below), whose sum is σ = 4364700. Its totient is φ = 1454898.

The previous prime is 2909789. The next prime is 2909813. The reversal of 2909798 is 8979092.

2909798 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727448 + ... + 727451.

It is an arithmetic number, because the mean of its divisors is an integer number (1091175).

2^2909798 is an apocalyptic number.

2909798 is a deficient number, since it is larger than the sum of its proper divisors (1454902).

2909798 is a wasteful number, since it uses less digits than its factorization.

2909798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454901.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 2909798 is about 1705.8130026471. The cubic root of 2909798 is about 142.7647361446.

The spelling of 2909798 in words is "two million, nine hundred nine thousand, seven hundred ninety-eight".