5109989 has 2 divisors, whose sum is σ = 5109990. Its totient is φ = 5109988.

The previous prime is 5109971. The next prime is 5110019. The reversal of 5109989 is 9899015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5085025 + 24964 = 2255^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 5109989 - 2¹⁶ = 5044453 is a prime.

It is a super-2 number, since 2×5109989² = 52223975160242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5109919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2554994 + 2554995.

It is an arithmetic number, because the mean of its divisors is an integer number (2554995).

Almost surely, 2^5109989 is an apocalyptic number.

It is an amenable number.

5109989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5109989 is an equidigital number, since it uses as much as digits as its factorization.

5109989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 5109989 is about 2260.5284780334. The cubic root of 5109989 is about 172.2423683374.

It can be divided in two parts, 5 and 109989, that multiplied together give a palindrome (549945).

The spelling of 5109989 in words is "five million, one hundred nine thousand, nine hundred eighty-nine".