40501647 has 8 divisors (see below), whose sum is σ = 60002480. Its totient is φ = 27001080.

The previous prime is 40501631. The next prime is 40501649. The reversal of 40501647 is 74610504.

It is not a de Polignac number, because 40501647 - 2⁴ = 40501631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1500061 = 40501647 / (4 + 0 + 5 + 0 + 1 + 6 + 4 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40501647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40501649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750004 + ... + 750057.

It is an arithmetic number, because the mean of its divisors is an integer number (7500310).

Almost surely, 2^40501647 is an apocalyptic number.

40501647 is a deficient number, since it is larger than the sum of its proper divisors (19500833).

40501647 is a wasteful number, since it uses less digits than its factorization.

40501647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500070 (or 1500064 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 40501647 is about 6364.0904299043. The cubic root of 40501647 is about 343.4189278742.

The spelling of 40501647 in words is "forty million, five hundred one thousand, six hundred forty-seven".