7289491 has 4 divisors (see below), whose sum is σ = 7952184. Its totient is φ = 6626800.

The previous prime is 7289479. The next prime is 7289507. The reversal of 7289491 is 1949827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1949827 = 11 ⋅177257.

It is a cyclic number.

It is not a de Polignac number, because 7289491 - 2⁷ = 7289363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7289441) 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, 331330 + ... + 331351.

It is an arithmetic number, because the mean of its divisors is an integer number (1988046).

Almost surely, 2^7289491 is an apocalyptic number.

7289491 is a deficient number, since it is larger than the sum of its proper divisors (662693).

7289491 is a wasteful number, since it uses less digits than its factorization.

7289491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662692.

The product of its digits is 36288, while the sum is 40.

The square root of 7289491 is about 2699.9057390953. The cubic root of 7289491 is about 193.8946092108.

The spelling of 7289491 in words is "seven million, two hundred eighty-nine thousand, four hundred ninety-one".