189429408 has 96 divisors (see below), whose sum is σ = 631451520. Its totient is φ = 54120960.

The previous prime is 189429397. The next prime is 189429431. The reversal of 189429408 is 804924981.

189429408 is a `hidden beast` number, since 189 + 429 + 40 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 9613 + ... + 21708.

It is an arithmetic number, because the mean of its divisors is an integer number (6577620).

Almost surely, 2^189429408 is an apocalyptic number.

189429408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

189429408 is an abundant number, since it is smaller than the sum of its proper divisors (442022112).

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

189429408 is a wasteful number, since it uses less digits than its factorization.

189429408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31347 (or 31333 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 189429408 is about 13763.3356422053. The cubic root of 189429408 is about 574.3136440606.

The spelling of 189429408 in words is "one hundred eighty-nine million, four hundred twenty-nine thousand, four hundred eight".