189622947 has 8 divisors (see below), whose sum is σ = 267703056. Its totient is φ = 118979072.

The previous prime is 189622943. The next prime is 189622963. The reversal of 189622947 is 749226981.

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

It is a cyclic number.

It is not a de Polignac number, because 189622947 - 2² = 189622943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189622896 and 189622905.

It is not an unprimeable number, because it can be changed into a prime (189622943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1858998 + ... + 1859099.

It is an arithmetic number, because the mean of its divisors is an integer number (33462882).

Almost surely, 2^189622947 is an apocalyptic number.

189622947 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

189622947 is a deficient number, since it is larger than the sum of its proper divisors (78080109).

189622947 is a wasteful number, since it uses less digits than its factorization.

189622947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3718117.

The product of its digits is 435456, while the sum is 48.

The square root of 189622947 is about 13770.3648099823. The cubic root of 189622947 is about 574.5091685333.

The spelling of 189622947 in words is "one hundred eighty-nine million, six hundred twenty-two thousand, nine hundred forty-seven".