189911406 has 8 divisors (see below), whose sum is σ = 379822824. Its totient is φ = 63303800.

The previous prime is 189911399. The next prime is 189911419. The reversal of 189911406 is 604119981.

It is a sphenic number, since it is the product of 3 distinct primes.

189911406 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15825945 + ... + 15825956.

It is an arithmetic number, because the mean of its divisors is an integer number (47477853).

Almost surely, 2^189911406 is an apocalyptic number.

189911406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

189911406 is a wasteful number, since it uses less digits than its factorization.

189911406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31651906.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 189911406 is about 13780.8347352401. The cubic root of 189911406 is about 574.8003400049.

The spelling of 189911406 in words is "one hundred eighty-nine million, nine hundred eleven thousand, four hundred six".