4551989 has 8 divisors (see below), whose sum is σ = 4919040. Its totient is φ = 4187376.

The previous prime is 4551983. The next prime is 4552019. The reversal of 4551989 is 9891554.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4551989 - 2⁴ = 4551973 is a prime.

It is a super-2 number, since 2×4551989² = 41441207712242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4551983) 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, 5972 + ... + 6690.

It is an arithmetic number, because the mean of its divisors is an integer number (614880).

Almost surely, 2^4551989 is an apocalyptic number.

It is an amenable number.

4551989 is a deficient number, since it is larger than the sum of its proper divisors (367051).

4551989 is a wasteful number, since it uses less digits than its factorization.

4551989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219.

The product of its digits is 64800, while the sum is 41.

The square root of 4551989 is about 2133.5390786203. The cubic root of 4551989 is about 165.7297217870.

The spelling of 4551989 in words is "four million, five hundred fifty-one thousand, nine hundred eighty-nine".