40559637 has 16 divisors (see below), whose sum is σ = 58482432. Its totient is φ = 24906240.

The previous prime is 40559633. The next prime is 40559639. The reversal of 40559637 is 73695504.

It is not a de Polignac number, because 40559637 - 2² = 40559633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40559595 and 40559604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40559633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6064 + ... + 10857.

It is an arithmetic number, because the mean of its divisors is an integer number (3655152).

Almost surely, 2^40559637 is an apocalyptic number.

40559637 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

40559637 is a deficient number, since it is larger than the sum of its proper divisors (17922795).

40559637 is a wasteful number, since it uses less digits than its factorization.

40559637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16988.

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 40559637 is about 6368.6448323015. The cubic root of 40559637 is about 343.5827513891.

The spelling of 40559637 in words is "forty million, five hundred fifty-nine thousand, six hundred thirty-seven".