2269381 has 4 divisors (see below), whose sum is σ = 2402892. Its totient is φ = 2135872.

The previous prime is 2269361. The next prime is 2269409. The reversal of 2269381 is 1839622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1839622 = 2 ⋅919811.

It can be written as a sum of positive squares in 2 ways, for example, as 1846881 + 422500 = 1359^2 + 650^2 .

It is a cyclic number.

It is not a de Polignac number, because 2269381 - 2⁵ = 2269349 is a prime.

It is a super-2 number, since 2×2269381² = 10300180246322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 (2269331) 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, 66730 + ... + 66763.

It is an arithmetic number, because the mean of its divisors is an integer number (600723).

2^2269381 is an apocalyptic number.

It is an amenable number.

2269381 is a deficient number, since it is larger than the sum of its proper divisors (133511).

2269381 is a wasteful number, since it uses less digits than its factorization.

2269381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133510.

The product of its digits is 5184, while the sum is 31.

The square root of 2269381 is about 1506.4464809611. The cubic root of 2269381 is about 131.4122359637.

The spelling of 2269381 in words is "two million, two hundred sixty-nine thousand, three hundred eighty-one".