7440997 has 2 divisors, whose sum is σ = 7440998. Its totient is φ = 7440996.

The previous prime is 7440947. The next prime is 7441003. The reversal of 7440997 is 7990447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4322241 + 3118756 = 2079^2 + 1766^2 .

It is a cyclic number.

It is not a de Polignac number, because 7440997 - 2⁷ = 7440869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7440947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3720498 + 3720499.

It is an arithmetic number, because the mean of its divisors is an integer number (3720499).

Almost surely, 2^7440997 is an apocalyptic number.

It is an amenable number.

7440997 is a deficient number, since it is larger than the sum of its proper divisors (1).

7440997 is an equidigital number, since it uses as much as digits as its factorization.

7440997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 7440997 is about 2727.8190922420. The cubic root of 7440997 is about 195.2287213208.

The spelling of 7440997 in words is "seven million, four hundred forty thousand, nine hundred ninety-seven".