189032977 has 4 divisors (see below), whose sum is σ = 216037696. Its totient is φ = 162028260.

The previous prime is 189032971. The next prime is 189032981. The reversal of 189032977 is 779230981.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 189032977 - 2³ = 189032969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189032971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13502349 + ... + 13502362.

It is an arithmetic number, because the mean of its divisors is an integer number (54009424).

Almost surely, 2^189032977 is an apocalyptic number.

It is an amenable number.

189032977 is a deficient number, since it is larger than the sum of its proper divisors (27004719).

189032977 is an equidigital number, since it uses as much as digits as its factorization.

189032977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27004718.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 189032977 is about 13748.9263944499. The cubic root of 189032977 is about 573.9127299974.

The spelling of 189032977 in words is "one hundred eighty-nine million, thirty-two thousand, nine hundred seventy-seven".