189409708 has 24 divisors (see below), whose sum is σ = 350481600. Its totient is φ = 89317008.

The previous prime is 189409691. The next prime is 189409723. The reversal of 189409708 is 807904981.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11763 + ... + 22741.

It is an arithmetic number, because the mean of its divisors is an integer number (14603400).

Almost surely, 2^189409708 is an apocalyptic number.

It is an amenable number.

189409708 is a deficient number, since it is larger than the sum of its proper divisors (161071892).

189409708 is a wasteful number, since it uses less digits than its factorization.

189409708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11229 (or 11227 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 189409708 is about 13762.6199540640. The cubic root of 189409708 is about 574.2937344962.

The spelling of 189409708 in words is "one hundred eighty-nine million, four hundred nine thousand, seven hundred eight".