40400297871 has 8 divisors (see below), whose sum is σ = 53871047424. Its totient is φ = 26931540120.

The previous prime is 40400297869. The next prime is 40400297897. The reversal of 40400297871 is 17879200404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40400297871 - 2¹ = 40400297869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400297471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449961 + ... + 532226.

It is an arithmetic number, because the mean of its divisors is an integer number (6733880928).

Almost surely, 2^40400297871 is an apocalyptic number.

40400297871 is a deficient number, since it is larger than the sum of its proper divisors (13470749553).

40400297871 is a wasteful number, since it uses less digits than its factorization.

40400297871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995901.

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 40400297871 in words is "forty billion, four hundred million, two hundred ninety-seven thousand, eight hundred seventy-one".