189479448 has 48 divisors (see below), whose sum is σ = 517116600. Its totient is φ = 62674560.

The previous prime is 189479447. The next prime is 189479453. The reversal of 189479448 is 844974981.

It is a super-2 number, since 2×189479448² = 71804922428769408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189479394 and 189479403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189479441) 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 11 ways as a sum of consecutive naturals, for example, 613 + ... + 19476.

Almost surely, 2^189479448 is an apocalyptic number.

189479448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189479448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258558300).

189479448 is an abundant number, since it is smaller than the sum of its proper divisors (327637152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189479448 is a wasteful number, since it uses less digits than its factorization.

189479448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20232 (or 20225 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 189479448 is about 13765.1533954402. The cubic root of 189479448 is about 574.3642101701.

The spelling of 189479448 in words is "one hundred eighty-nine million, four hundred seventy-nine thousand, four hundred forty-eight".