189392417 has 4 divisors (see below), whose sum is σ = 195923220. Its totient is φ = 182861616.

The previous prime is 189392347. The next prime is 189392431. The reversal of 189392417 is 714293981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47210641 + 142181776 = 6871^2 + 11924^2 .

It is a cyclic number.

It is not a de Polignac number, because 189392417 - 2¹⁶ = 189326881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189392477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3265358 + ... + 3265415.

It is an arithmetic number, because the mean of its divisors is an integer number (48980805).

Almost surely, 2^189392417 is an apocalyptic number.

It is an amenable number.

189392417 is a deficient number, since it is larger than the sum of its proper divisors (6530803).

189392417 is an equidigital number, since it uses as much as digits as its factorization.

189392417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6530802.

The product of its digits is 108864, while the sum is 44.

The square root of 189392417 is about 13761.9917526498. The cubic root of 189392417 is about 574.2762584205.

The spelling of 189392417 in words is "one hundred eighty-nine million, three hundred ninety-two thousand, four hundred seventeen".