7273889 has 4 divisors (see below), whose sum is σ = 8313024. Its totient is φ = 6234756.

The previous prime is 7273843. The next prime is 7273901. The reversal of 7273889 is 9883727.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9883727 = 7 ⋅1411961.

It is a cyclic number.

It is not a de Polignac number, because 7273889 - 2⁸ = 7273633 is a prime.

It is a super-2 number, since 2×7273889² = 105818922368642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7273829) 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, 519557 + ... + 519570.

It is an arithmetic number, because the mean of its divisors is an integer number (2078256).

Almost surely, 2^7273889 is an apocalyptic number.

It is an amenable number.

7273889 is a deficient number, since it is larger than the sum of its proper divisors (1039135).

7273889 is a wasteful number, since it uses less digits than its factorization.

7273889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039134.

The product of its digits is 169344, while the sum is 44.

The square root of 7273889 is about 2697.0148312533. The cubic root of 7273889 is about 193.7561768409.

It can be divided in two parts, 72738 and 89, that added together give a palindrome (72827).

The spelling of 7273889 in words is "seven million, two hundred seventy-three thousand, eight hundred eighty-nine".