2201993 has 4 divisors (see below), whose sum is σ = 2331540. Its totient is φ = 2072448.

The previous prime is 2201989. The next prime is 2202007. The reversal of 2201993 is 3991022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1776889 + 425104 = 1333^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201993 - 2² = 2201989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64748 + ... + 64781.

It is an arithmetic number, because the mean of its divisors is an integer number (582885).

2^2201993 is an apocalyptic number.

It is an amenable number.

2201993 is a deficient number, since it is larger than the sum of its proper divisors (129547).

2201993 is a wasteful number, since it uses less digits than its factorization.

2201993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129546.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 2201993 is about 1483.9113854944. The cubic root of 2201993 is about 130.0984067521.

The spelling of 2201993 in words is "two million, two hundred one thousand, nine hundred ninety-three".