40357983 has 12 divisors (see below), whose sum is σ = 57163400. Its totient is φ = 25322112.

The previous prime is 40357979. The next prime is 40358023. The reversal of 40357983 is 38975304.

It is not a de Polignac number, because 40357983 - 2² = 40357979 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40357903) 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, 22408 + ... + 24141.

Almost surely, 2^40357983 is an apocalyptic number.

40357983 is a deficient number, since it is larger than the sum of its proper divisors (16805417).

40357983 is a wasteful number, since it uses less digits than its factorization.

40357983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46586 (or 46569 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 40357983 is about 6352.7933226259. The cubic root of 40357983 is about 343.0123980140.

The spelling of 40357983 in words is "forty million, three hundred fifty-seven thousand, nine hundred eighty-three".