7399989 has 6 divisors (see below), whose sum is σ = 10688886. Its totient is φ = 4933320.

The previous prime is 7399961. The next prime is 7399993. The reversal of 7399989 is 9899937.

It is a happy number.

7399989 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4040100 + 3359889 = 2010^2 + 1833^2 .

It is not a de Polignac number, because 7399989 - 2⁹ = 7399477 is a prime.

7399989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7399289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411102 + ... + 411119.

It is an arithmetic number, because the mean of its divisors is an integer number (1781481).

Almost surely, 2^7399989 is an apocalyptic number.

It is an amenable number.

7399989 is a deficient number, since it is larger than the sum of its proper divisors (3288897).

7399989 is a wasteful number, since it uses less digits than its factorization.

7399989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822227 (or 822224 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 7399989 is about 2720.2920799061. The cubic root of 7399989 is about 194.8694194805.

It can be divided in two parts, 73999 and 89, that added together give a cube (74088 = 42³).

The spelling of 7399989 in words is "seven million, three hundred ninety-nine thousand, nine hundred eighty-nine".