7440089 has 2 divisors, whose sum is σ = 7440090. Its totient is φ = 7440088.

The previous prime is 7440061. The next prime is 7440091. The reversal of 7440089 is 9800447.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4481689 + 2958400 = 2117^2 + 1720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7440089 is a prime.

Together with 7440091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7440049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3720044 + 3720045.

It is an arithmetic number, because the mean of its divisors is an integer number (3720045).

Almost surely, 2^7440089 is an apocalyptic number.

It is an amenable number.

7440089 is a deficient number, since it is larger than the sum of its proper divisors (1).

7440089 is an equidigital number, since it uses as much as digits as its factorization.

7440089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 7440089 is about 2727.6526538399. The cubic root of 7440089 is about 195.2207799616.

The spelling of 7440089 in words is "seven million, four hundred forty thousand, eighty-nine".