7400489 has 2 divisors, whose sum is σ = 7400490. Its totient is φ = 7400488.

The previous prime is 7400473. The next prime is 7400501. The reversal of 7400489 is 9840047.

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., 7182400 + 218089 = 2680^2 + 467^2 .

It is a cyclic number.

It is not a de Polignac number, because 7400489 - 2⁴ = 7400473 is a prime.

It is not a weakly prime, because it can be changed into another prime (7400189) 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, 3700244 + 3700245.

It is an arithmetic number, because the mean of its divisors is an integer number (3700245).

Almost surely, 2^7400489 is an apocalyptic number.

It is an amenable number.

7400489 is a deficient number, since it is larger than the sum of its proper divisors (1).

7400489 is an equidigital number, since it uses as much as digits as its factorization.

7400489 is an odious number, because the sum of its binary digits is odd.

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

The square root of 7400489 is about 2720.3839802498. The cubic root of 7400489 is about 194.8738083390.

The spelling of 7400489 in words is "seven million, four hundred thousand, four hundred eighty-nine".