40878943 has 8 divisors (see below), whose sum is σ = 47076480. Its totient is φ = 34770840.

The previous prime is 40878923. The next prime is 40878947. The reversal of 40878943 is 34987804.

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 40878943 - 2¹³ = 40870751 is a prime.

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 40878943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40878947) 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, 21373 + ... + 23206.

It is an arithmetic number, because the mean of its divisors is an integer number (5884560).

Almost surely, 2^40878943 is an apocalyptic number.

40878943 is a deficient number, since it is larger than the sum of its proper divisors (6197537).

40878943 is a wasteful number, since it uses less digits than its factorization.

40878943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44717.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 40878943 is about 6393.6642858380. The cubic root of 40878943 is about 344.4820148135.

The spelling of 40878943 in words is "forty million, eight hundred seventy-eight thousand, nine hundred forty-three".