40744637 has 8 divisors (see below), whose sum is σ = 41535936. Its totient is φ = 39961152.

The previous prime is 40744609. The next prime is 40744657. The reversal of 40744637 is 73644704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40744637 - 2⁶ = 40744573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40744597 and 40744606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40744657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9173 + ... + 12869.

It is an arithmetic number, because the mean of its divisors is an integer number (5191992).

Almost surely, 2^40744637 is an apocalyptic number.

It is an amenable number.

40744637 is a deficient number, since it is larger than the sum of its proper divisors (791299).

40744637 is a wasteful number, since it uses less digits than its factorization.

40744637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907.

The product of its (nonzero) digits is 56448, while the sum is 35.

The square root of 40744637 is about 6383.1525910008. The cubic root of 40744637 is about 344.1043406445.

The spelling of 40744637 in words is "forty million, seven hundred forty-four thousand, six hundred thirty-seven".