40240539 has 6 divisors (see below), whose sum is σ = 58125236. Its totient is φ = 26827020.

The previous prime is 40240523. The next prime is 40240553. The reversal of 40240539 is 93504204.

It is not a de Polignac number, because 40240539 - 2⁴ = 40240523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40240559) 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, 2235577 + ... + 2235594.

Almost surely, 2^40240539 is an apocalyptic number.

40240539 is a deficient number, since it is larger than the sum of its proper divisors (17884697).

40240539 is a wasteful number, since it uses less digits than its factorization.

40240539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4471177 (or 4471174 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 40240539 is about 6343.5430951480. The cubic root of 40240539 is about 342.6793462826.

The spelling of 40240539 in words is "forty million, two hundred forty thousand, five hundred thirty-nine".