2789261 has 4 divisors (see below), whose sum is σ = 2799900. Its totient is φ = 2778624.

The previous prime is 2789251. The next prime is 2789263. The reversal of 2789261 is 1629872.

It is a happy number.

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 168100 + 2621161 = 410^2 + 1619^2 .

It is a cyclic number.

It is not a de Polignac number, because 2789261 - 2⁶ = 2789197 is a prime.

It is a super-2 number, since 2×2789261² = 15559953852242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2789263) 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, 4916 + ... + 5453.

It is an arithmetic number, because the mean of its divisors is an integer number (699975).

2^2789261 is an apocalyptic number.

It is an amenable number.

2789261 is a deficient number, since it is larger than the sum of its proper divisors (10639).

2789261 is a wasteful number, since it uses less digits than its factorization.

2789261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10638.

The product of its digits is 12096, while the sum is 35.

The square root of 2789261 is about 1670.1080803349. The cubic root of 2789261 is about 140.7655510645.

The spelling of 2789261 in words is "two million, seven hundred eighty-nine thousand, two hundred sixty-one".