189427087 has 8 divisors (see below), whose sum is σ = 194750000. Its totient is φ = 184114944.

The previous prime is 189427033. The next prime is 189427099. The reversal of 189427087 is 780724981.

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

It is a cyclic number.

It is not a de Polignac number, because 189427087 - 2⁷ = 189426959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189422087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44164 + ... + 48262.

It is an arithmetic number, because the mean of its divisors is an integer number (24343750).

Almost surely, 2^189427087 is an apocalyptic number.

189427087 is a deficient number, since it is larger than the sum of its proper divisors (5322913).

189427087 is a wasteful number, since it uses less digits than its factorization.

189427087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5385.

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 189427087 is about 13763.2513237243. The cubic root of 189427087 is about 574.3112984420.

The spelling of 189427087 in words is "one hundred eighty-nine million, four hundred twenty-seven thousand, eighty-seven".