189747 has 12 divisors (see below), whose sum is σ = 283920. Its totient is φ = 121968.

The previous prime is 189743. The next prime is 189757. The reversal of 189747 is 747981.

It is not a de Polignac number, because 189747 - 2² = 189743 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (189743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103 + ... + 624.

It is an arithmetic number, because the mean of its divisors is an integer number (23660).

2¹⁸⁹⁷⁴⁷ is an apocalyptic number.

189747 is a deficient number, since it is larger than the sum of its proper divisors (94173).

189747 is a wasteful number, since it uses less digits than its factorization.

189747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 759 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 189747 is about 435.5995867767. The cubic root of 189747 is about 57.4634424207.

It can be divided in two parts, 18974 and 7, that added together give a palindrome (18981).

The spelling of 189747 in words is "one hundred eighty-nine thousand, seven hundred forty-seven".