189084479 has 4 divisors (see below), whose sum is σ = 189115584. Its totient is φ = 189053376.

The previous prime is 189084473. The next prime is 189084487. The reversal of 189084479 is 974480981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974480981 = 5087 ⋅191563.

It is a cyclic number.

It is not a de Polignac number, because 189084479 - 2⁴ = 189084463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189084473) 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, 3122 + ... + 19695.

It is an arithmetic number, because the mean of its divisors is an integer number (47278896).

Almost surely, 2^189084479 is an apocalyptic number.

189084479 is a deficient number, since it is larger than the sum of its proper divisors (31105).

189084479 is an equidigital number, since it uses as much as digits as its factorization.

189084479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31104.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 189084479 is about 13750.7992131367. The cubic root of 189084479 is about 573.9648460707.

The spelling of 189084479 in words is "one hundred eighty-nine million, eighty-four thousand, four hundred seventy-nine".