40821189 has 16 divisors (see below), whose sum is σ = 55413120. Its totient is φ = 26726400.

The previous prime is 40821173. The next prime is 40821197. The reversal of 40821189 is 98112804.

It is not a de Polignac number, because 40821189 - 2⁴ = 40821173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40821169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43477 + ... + 44405.

It is an arithmetic number, because the mean of its divisors is an integer number (3463320).

Almost surely, 2^40821189 is an apocalyptic number.

It is an amenable number.

40821189 is a deficient number, since it is larger than the sum of its proper divisors (14591931).

40821189 is a wasteful number, since it uses less digits than its factorization.

40821189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 40821189 is about 6389.1461870895. The cubic root of 40821189 is about 344.3197096466.

The spelling of 40821189 in words is "forty million, eight hundred twenty-one thousand, one hundred eighty-nine".