2222391 has 8 divisors (see below), whose sum is σ = 2971504. Its totient is φ = 1477440.

The previous prime is 2222387. The next prime is 2222443. The reversal of 2222391 is 1932222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2222391 - 2² = 2222387 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561 + ... + 2181.

It is an arithmetic number, because the mean of its divisors is an integer number (371438).

2^2222391 is an apocalyptic number.

2222391 is a deficient number, since it is larger than the sum of its proper divisors (749113).

2222391 is a wasteful number, since it uses less digits than its factorization.

2222391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081.

The product of its digits is 432, while the sum is 21.

The square root of 2222391 is about 1490.7685937127. The cubic root of 2222391 is about 130.4988916686.

The spelling of 2222391 in words is "two million, two hundred twenty-two thousand, three hundred ninety-one".