40590396 has 120 divisors (see below), whose sum is σ = 132375936. Its totient is φ = 10536480.

The previous prime is 40590383. The next prime is 40590397. The reversal of 40590396 is 69309504.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 40590396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40590397) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24135 + ... + 25761.

Almost surely, 2^40590396 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 40590396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66187968).

40590396 is an abundant number, since it is smaller than the sum of its proper divisors (91785540).

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

40590396 is a wasteful number, since it uses less digits than its factorization.

40590396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661 (or 1650 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 40590396 is about 6371.0592525890. The cubic root of 40590396 is about 343.6695831281.

The spelling of 40590396 in words is "forty million, five hundred ninety thousand, three hundred ninety-six".