7040989 has 4 divisors (see below), whose sum is σ = 7231324. Its totient is φ = 6850656.

The previous prime is 7040987. The next prime is 7040993. The reversal of 7040989 is 9890407.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4235364 + 2805625 = 2058^2 + 1675^2 .

It is a cyclic number.

It is not a de Polignac number, because 7040989 - 2¹ = 7040987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 190297 = 7040989 / (7 + 0 + 4 + 0 + 9 + 8 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7040981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95112 + ... + 95185.

It is an arithmetic number, because the mean of its divisors is an integer number (1807831).

Almost surely, 2^7040989 is an apocalyptic number.

It is an amenable number.

7040989 is a deficient number, since it is larger than the sum of its proper divisors (190335).

7040989 is a wasteful number, since it uses less digits than its factorization.

7040989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190334.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7040989 is about 2653.4861974391. The cubic root of 7040989 is about 191.6657686998.

The spelling of 7040989 in words is "seven million, forty thousand, nine hundred eighty-nine".