40396 has 6 divisors (see below), whose sum is σ = 70700. Its totient is φ = 20196.

The previous prime is 40387. The next prime is 40423. The reversal of 40396 is 69304.

It is an Ulam number.

40396 is a modest number, since divided by 396 gives 4 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5046 + ... + 5053.

2⁴⁰³⁹⁶ is an apocalyptic number.

It is an amenable number.

40396 is a deficient number, since it is larger than the sum of its proper divisors (30304).

40396 is a wasteful number, since it uses less digits than its factorization.

40396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10103 (or 10101 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 40396 is about 200.9875618042. The cubic root of 40396 is about 34.3120069482.

The spelling of 40396 in words is "forty thousand, three hundred ninety-six".