40589836 has 36 divisors (see below), whose sum is σ = 84661416. Its totient is φ = 16968000.

The previous prime is 40589803. The next prime is 40589837. The reversal of 40589836 is 63898504.

It is a junction number, because it is equal to n+sod(n) for n = 40589792 and 40589801.

It is not an unprimeable number, because it can be changed into a prime (40589837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5511 + ... + 10561.

It is an arithmetic number, because the mean of its divisors is an integer number (2351706).

Almost surely, 2^40589836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40589836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42330708).

40589836 is an abundant number, since it is smaller than the sum of its proper divisors (44071580).

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

40589836 is a wasteful number, since it uses less digits than its factorization.

40589836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110 (or 5101 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 40589836 is about 6371.0153037016. The cubic root of 40589836 is about 343.6680026570.

The spelling of 40589836 in words is "forty million, five hundred eighty-nine thousand, eight hundred thirty-six".