149085889 has 2 divisors, whose sum is σ = 149085890. Its totient is φ = 149085888.

The previous prime is 149085887. The next prime is 149085901. The reversal of 149085889 is 988580941.

149085889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149035264 + 50625 = 12208^2 + 225^2 .

It is an emirp because it is prime and its reverse (988580941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149085889 - 2¹ = 149085887 is a prime.

Together with 149085887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (149085887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74542944 + 74542945.

It is an arithmetic number, because the mean of its divisors is an integer number (74542945).

Almost surely, 2^149085889 is an apocalyptic number.

It is an amenable number.

149085889 is a deficient number, since it is larger than the sum of its proper divisors (1).

149085889 is an equidigital number, since it uses as much as digits as its factorization.

149085889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 52.

The square root of 149085889 is about 12210.0732594035. The cubic root of 149085889 is about 530.2477647785.

The spelling of 149085889 in words is "one hundred forty-nine million, eighty-five thousand, eight hundred eighty-nine".