40000189 has 4 divisors (see below), whose sum is σ = 40035520. Its totient is φ = 39964860.

The previous prime is 40000183. The next prime is 40000211. The reversal of 40000189 is 98100004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40000189 - 2⁷ = 40000061 is a prime.

It is a Duffinian number.

40000189 is a modest number, since divided by 189 gives 40 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15909 + ... + 18250.

It is an arithmetic number, because the mean of its divisors is an integer number (10008880).

Almost surely, 2^40000189 is an apocalyptic number.

It is an amenable number.

40000189 is a deficient number, since it is larger than the sum of its proper divisors (35331).

40000189 is a wasteful number, since it uses less digits than its factorization.

40000189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35330.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 40000189 is about 6324.5702620811. The cubic root of 40000189 is about 341.9957279769.

The spelling of 40000189 in words is "forty million, one hundred eighty-nine", and thus it is an aban number.