40543938 has 12 divisors (see below), whose sum is σ = 87845238. Its totient is φ = 13514640.

The previous prime is 40543933. The next prime is 40543961. The reversal of 40543938 is 83934504.

It can be written as a sum of positive squares in only one way, i.e., 40487769 + 56169 = 6363^2 + 237^2 .

It is not an unprimeable number, because it can be changed into a prime (40543933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1126203 + ... + 1126238.

Almost surely, 2^40543938 is an apocalyptic number.

40543938 is an abundant number, since it is smaller than the sum of its proper divisors (47301300).

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

40543938 is a wasteful number, since it uses less digits than its factorization.

40543938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252449 (or 2252446 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 40543938 is about 6367.4121902073. The cubic root of 40543938 is about 343.5384166590.

The spelling of 40543938 in words is "forty million, five hundred forty-three thousand, nine hundred thirty-eight".