880189109 has 2 divisors, whose sum is σ = 880189110. Its totient is φ = 880189108.

The previous prime is 880189099. The next prime is 880189111. The reversal of 880189109 is 901981088.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 830880625 + 49308484 = 28825^2 + 7022^2 .

It is a cyclic number.

It is not a de Polignac number, because 880189109 - 2⁸ = 880188853 is a prime.

It is a Sophie Germain prime.

Together with 880189111, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 880189109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (880189159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440094554 + 440094555.

It is an arithmetic number, because the mean of its divisors is an integer number (440094555).

Almost surely, 2^880189109 is an apocalyptic number.

It is an amenable number.

880189109 is a deficient number, since it is larger than the sum of its proper divisors (1).

880189109 is an equidigital number, since it uses as much as digits as its factorization.

880189109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 44.

The square root of 880189109 is about 29667.9812087038. The cubic root of 880189109 is about 958.3526104822.

The spelling of 880189109 in words is "eight hundred eighty million, one hundred eighty-nine thousand, one hundred nine".