40040847 has 48 divisors (see below), whose sum is σ = 75928320. Its totient is φ = 19699200.

The previous prime is 40040843. The next prime is 40040849. The reversal of 40040847 is 74804004.

It is not a de Polignac number, because 40040847 - 2² = 40040843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40040847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040843) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11647 + ... + 14687.

It is an arithmetic number, because the mean of its divisors is an integer number (1581840).

Almost surely, 2^40040847 is an apocalyptic number.

40040847 is a deficient number, since it is larger than the sum of its proper divisors (35887473).

40040847 is a wasteful number, since it uses less digits than its factorization.

40040847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084 (or 3081 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 40040847 is about 6327.7837352425. The cubic root of 40040847 is about 342.1115620445. Note that the first 3 decimals are identical.

The spelling of 40040847 in words is "forty million, forty thousand, eight hundred forty-seven".