189017039 has 4 divisors (see below), whose sum is σ = 189231024. Its totient is φ = 188803056.

The previous prime is 189016991. The next prime is 189017047. The reversal of 189017039 is 930710981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 930710981 = 2719 ⋅342299.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189017039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189016993 and 189017011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189017069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105662 + ... + 107435.

It is an arithmetic number, because the mean of its divisors is an integer number (47307756).

Almost surely, 2^189017039 is an apocalyptic number.

189017039 is a deficient number, since it is larger than the sum of its proper divisors (213985).

189017039 is an equidigital number, since it uses as much as digits as its factorization.

189017039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213984.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 189017039 is about 13748.3467733397. The cubic root of 189017039 is about 573.8966000460.

The spelling of 189017039 in words is "one hundred eighty-nine million, seventeen thousand, thirty-nine".