5166989 has 4 divisors (see below), whose sum is σ = 5179356. Its totient is φ = 5154624.

The previous prime is 5166983. The next prime is 5167003. The reversal of 5166989 is 9896615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9896615 = 5 ⋅1979323.

It can be written as a sum of positive squares in 2 ways, for example, as 2418025 + 2748964 = 1555^2 + 1658^2 .

It is a cyclic number.

It is not a de Polignac number, because 5166989 - 2¹² = 5162893 is a prime.

It is a super-2 number, since 2×5166989² = 53395550652242, 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 (5166983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5534 + ... + 6399.

It is an arithmetic number, because the mean of its divisors is an integer number (1294839).

Almost surely, 2^5166989 is an apocalyptic number.

It is an amenable number.

5166989 is a deficient number, since it is larger than the sum of its proper divisors (12367).

5166989 is a wasteful number, since it uses less digits than its factorization.

5166989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12366.

The product of its digits is 116640, while the sum is 44.

The square root of 5166989 is about 2273.1011856053. The cubic root of 5166989 is about 172.8804346080.

The spelling of 5166989 in words is "five million, one hundred sixty-six thousand, nine hundred eighty-nine".