7421089 has 4 divisors (see below), whose sum is σ = 7991956. Its totient is φ = 6850224.

The previous prime is 7421083. The next prime is 7421093. The reversal of 7421089 is 9801247.

7421089 = T₁₀₆₂ + T₁₀₆₃ + ... + T₁₀₇₄.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9801247 = 463 ⋅21169.

It can be written as a sum of positive squares in 2 ways, for example, as 4558225 + 2862864 = 2135^2 + 1692^2 .

It is a cyclic number.

It is not a de Polignac number, because 7421089 - 2⁹ = 7420577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7421089.

It is not an unprimeable number, because it can be changed into a prime (7421083) 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 in 3 ways as a sum of consecutive naturals, for example, 285414 + ... + 285439.

It is an arithmetic number, because the mean of its divisors is an integer number (1997989).

Almost surely, 2^7421089 is an apocalyptic number.

It is an amenable number.

7421089 is a deficient number, since it is larger than the sum of its proper divisors (570867).

7421089 is a wasteful number, since it uses less digits than its factorization.

7421089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570866.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 7421089 is about 2724.1675792800. The cubic root of 7421089 is about 195.0544577246.

The spelling of 7421089 in words is "seven million, four hundred twenty-one thousand, eighty-nine".