189847942 has 8 divisors (see below), whose sum is σ = 301523256. Its totient is φ = 89340192.

The previous prime is 189847877. The next prime is 189847969. The reversal of 189847942 is 249748981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 189847942.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2791848 + ... + 2791915.

It is an arithmetic number, because the mean of its divisors is an integer number (37690407).

Almost surely, 2^189847942 is an apocalyptic number.

189847942 is a deficient number, since it is larger than the sum of its proper divisors (111675314).

189847942 is a wasteful number, since it uses less digits than its factorization.

189847942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5583782.

The product of its digits is 1161216, while the sum is 52.

The square root of 189847942 is about 13778.5319247008. The cubic root of 189847942 is about 574.7363045444.

The spelling of 189847942 in words is "one hundred eighty-nine million, eight hundred forty-seven thousand, nine hundred forty-two".