2291398 has 16 divisors (see below), whose sum is σ = 3627360. Its totient is φ = 1083456.

The previous prime is 2291389. The next prime is 2291417. The reversal of 2291398 is 8931922.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4786 + ... + 5242.

It is an arithmetic number, because the mean of its divisors is an integer number (226710).

2^2291398 is an apocalyptic number.

2291398 is a deficient number, since it is larger than the sum of its proper divisors (1335962).

2291398 is a wasteful number, since it uses less digits than its factorization.

2291398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591.

The product of its digits is 7776, while the sum is 34.

The square root of 2291398 is about 1513.7364367683. The cubic root of 2291398 is about 131.8358458367.

The spelling of 2291398 in words is "two million, two hundred ninety-one thousand, three hundred ninety-eight".