40240943843 has 4 divisors (see below), whose sum is σ = 40242349728. Its totient is φ = 40239537960.

The previous prime is 40240943803. The next prime is 40240943891. The reversal of 40240943843 is 34834904204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40240943843 - 2¹⁴ = 40240927459 is a prime.

It is a super-2 number, since 2×40240943843² (a number of 22 digits) contains 22 as substring.

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 40240943843.

It is not an unprimeable number, because it can be changed into a prime (40240943803) 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 3 ways as a sum of consecutive naturals, for example, 659096 + ... + 717557.

It is an arithmetic number, because the mean of its divisors is an integer number (10060587432).

Almost surely, 2^40240943843 is an apocalyptic number.

40240943843 is a deficient number, since it is larger than the sum of its proper divisors (1405885).

40240943843 is a wasteful number, since it uses less digits than its factorization.

40240943843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405884.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 40240943843 in words is "forty billion, two hundred forty million, nine hundred forty-three thousand, eight hundred forty-three".