7189989 has 8 divisors (see below), whose sum is σ = 9718272. Its totient is φ = 4727520.

The previous prime is 7189943. The next prime is 7189993. The reversal of 7189989 is 9899817.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7189989 - 2¹¹ = 7187941 is a prime.

7189989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7189939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16197 + ... + 16634.

It is an arithmetic number, because the mean of its divisors is an integer number (1214784).

Almost surely, 2^7189989 is an apocalyptic number.

It is an amenable number.

7189989 is a deficient number, since it is larger than the sum of its proper divisors (2528283).

7189989 is a wasteful number, since it uses less digits than its factorization.

7189989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32907.

The product of its digits is 326592, while the sum is 51.

The square root of 7189989 is about 2681.4154844037. The cubic root of 7189989 is about 193.0083399083.

The spelling of 7189989 in words is "seven million, one hundred eighty-nine thousand, nine hundred eighty-nine".