40987539 has 12 divisors (see below), whose sum is σ = 61397336. Its totient is φ = 27324864.

The previous prime is 40987501. The next prime is 40987543. The reversal of 40987539 is 93578904.

It is not a de Polignac number, because 40987539 - 2⁸ = 40987283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40987494 and 40987503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40987559) 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, 84094 + ... + 84579.

Almost surely, 2^40987539 is an apocalyptic number.

40987539 is a deficient number, since it is larger than the sum of its proper divisors (20409797).

40987539 is an equidigital number, since it uses as much as digits as its factorization.

40987539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168688 (or 168676 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 40987539 is about 6402.1511228649. The cubic root of 40987539 is about 344.7867869742.

The spelling of 40987539 in words is "forty million, nine hundred eighty-seven thousand, five hundred thirty-nine".