7261889 has 4 divisors (see below), whose sum is σ = 7273860. Its totient is φ = 7249920.

The previous prime is 7261871. The next prime is 7261909. The reversal of 7261889 is 9881627.

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 4765489 + 2496400 = 2183^2 + 1580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7261889 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7261789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5024 + ... + 6305.

It is an arithmetic number, because the mean of its divisors is an integer number (1818465).

Almost surely, 2^7261889 is an apocalyptic number.

It is an amenable number.

7261889 is a deficient number, since it is larger than the sum of its proper divisors (11971).

7261889 is a wasteful number, since it uses less digits than its factorization.

7261889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11970.

The product of its digits is 48384, while the sum is 41.

The square root of 7261889 is about 2694.7892310903. The cubic root of 7261889 is about 193.6495693172.

The spelling of 7261889 in words is "seven million, two hundred sixty-one thousand, eight hundred eighty-nine".