7440890 has 16 divisors (see below), whose sum is σ = 13578408. Its totient is φ = 2935296.

The previous prime is 7440869. The next prime is 7440893. The reversal of 7440890 is 980447.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6713281 + 727609 = 2591^2 + 853^2 .

It is not an unprimeable number, because it can be changed into a prime (7440893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4367 + ... + 5826.

Almost surely, 2^7440890 is an apocalyptic number.

7440890 is a deficient number, since it is larger than the sum of its proper divisors (6137518).

7440890 is a wasteful number, since it uses less digits than its factorization.

7440890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10273.

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

The square root of 7440890 is about 2727.7994794339. The cubic root of 7440890 is about 195.2277855334.

The spelling of 7440890 in words is "seven million, four hundred forty thousand, eight hundred ninety".