189796679 has 4 divisors (see below), whose sum is σ = 189946584. Its totient is φ = 189646776.

The previous prime is 189796639. The next prime is 189796697. The reversal of 189796679 is 976697981.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189796679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189796639) 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, 73037 + ... + 75590.

It is an arithmetic number, because the mean of its divisors is an integer number (47486646).

Almost surely, 2^189796679 is an apocalyptic number.

189796679 is a deficient number, since it is larger than the sum of its proper divisors (149905).

189796679 is a wasteful number, since it uses less digits than its factorization.

189796679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149904.

The product of its digits is 10287648, while the sum is 62.

The square root of 189796679 is about 13776.6715501241. The cubic root of 189796679 is about 574.6845695275.

The spelling of 189796679 in words is "one hundred eighty-nine million, seven hundred ninety-six thousand, six hundred seventy-nine".