40436 has 12 divisors (see below), whose sum is σ = 77280. Its totient is φ = 18360.

The previous prime is 40433. The next prime is 40459. The reversal of 40436 is 63404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40433) 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, 416 + ... + 503.

It is an arithmetic number, because the mean of its divisors is an integer number (6440).

2⁴⁰⁴³⁶ is an apocalyptic number.

It is an amenable number.

40436 is a deficient number, since it is larger than the sum of its proper divisors (36844).

40436 is a wasteful number, since it uses less digits than its factorization.

40436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934 (or 932 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40436 is about 201.0870458284. The cubic root of 40436 is about 34.3233284282.

The spelling of 40436 in words is "forty thousand, four hundred thirty-six".