40863447 has 20 divisors (see below), whose sum is σ = 61337320. Its totient is φ = 27111024.

The previous prime is 40863443. The next prime is 40863451. The reversal of 40863447 is 74436804.

It is an interprime number because it is at equal distance from previous prime (40863443) and next prime (40863451).

It is not a de Polignac number, because 40863447 - 2² = 40863443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40863443) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17448 + ... + 19650.

It is an arithmetic number, because the mean of its divisors is an integer number (3066866).

Almost surely, 2^40863447 is an apocalyptic number.

40863447 is a deficient number, since it is larger than the sum of its proper divisors (20473873).

40863447 is a wasteful number, since it uses less digits than its factorization.

40863447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444 (or 2435 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 40863447 is about 6392.4523463222. The cubic root of 40863447 is about 344.4384816596.

The spelling of 40863447 in words is "forty million, eight hundred sixty-three thousand, four hundred forty-seven".