189066977 has 12 divisors (see below), whose sum is σ = 208238100. Its totient is φ = 171531360.

The previous prime is 189066973. The next prime is 189067009. The reversal of 189066977 is 779660981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 73805281 + 115261696 = 8591^2 + 10736^2 .

It is not a de Polignac number, because 189066977 - 2² = 189066973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189066971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72899 + ... + 75447.

It is an arithmetic number, because the mean of its divisors is an integer number (17353175).

Almost surely, 2^189066977 is an apocalyptic number.

It is an amenable number.

189066977 is a deficient number, since it is larger than the sum of its proper divisors (19171123).

189066977 is a wasteful number, since it uses less digits than its factorization.

189066977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184 (or 3173 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 189066977 is about 13750.1627990362. The cubic root of 189066977 is about 573.9471364509.

The spelling of 189066977 in words is "one hundred eighty-nine million, sixty-six thousand, nine hundred seventy-seven".