40198031847 has 12 divisors (see below), whose sum is σ = 58596520840. Its totient is φ = 26552827728.

The previous prime is 40198031827. The next prime is 40198031857. The reversal of 40198031847 is 74813089104.

It is a happy number.

It is not a de Polignac number, because 40198031847 - 2⁷ = 40198031719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40198031827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20487313 + ... + 20489274.

Almost surely, 2^40198031847 is an apocalyptic number.

40198031847 is a deficient number, since it is larger than the sum of its proper divisors (18398488993).

40198031847 is a wasteful number, since it uses less digits than its factorization.

40198031847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40976702 (or 40976699 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 40198031847 in words is "forty billion, one hundred ninety-eight million, thirty-one thousand, eight hundred forty-seven".