189749347 has 2 divisors, whose sum is σ = 189749348. Its totient is φ = 189749346.

The previous prime is 189749327. The next prime is 189749383. The reversal of 189749347 is 743947981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189749347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189749294 and 189749303.

It is not a weakly prime, because it can be changed into another prime (189749327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94874673 + 94874674.

It is an arithmetic number, because the mean of its divisors is an integer number (94874674).

Almost surely, 2^189749347 is an apocalyptic number.

189749347 is a deficient number, since it is larger than the sum of its proper divisors (1).

189749347 is an equidigital number, since it uses as much as digits as its factorization.

189749347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 52.

The square root of 189749347 is about 13774.9536115371. The cubic root of 189749347 is about 574.6367934343.

It can be divided in two parts, 189749 and 347, that added together give a square (190096 = 436²).

The spelling of 189749347 in words is "one hundred eighty-nine million, seven hundred forty-nine thousand, three hundred forty-seven".