189549400 has 24 divisors (see below), whose sum is σ = 440702820. Its totient is φ = 75819680.

The previous prime is 189549389. The next prime is 189549413. The reversal of 189549400 is 4945981.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 473674 + ... + 474073.

Almost surely, 2^189549400 is an apocalyptic number.

189549400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189549400 is an abundant number, since it is smaller than the sum of its proper divisors (251153420).

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

189549400 is a wasteful number, since it uses less digits than its factorization.

189549400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947763 (or 947754 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 189549400 is about 13767.6940698143. The cubic root of 189549400 is about 574.4348827107.

The spelling of 189549400 in words is "one hundred eighty-nine million, five hundred forty-nine thousand, four hundred".