40988947449 has 16 divisors (see below), whose sum is σ = 57332776320. Its totient is φ = 26012085120.

The previous prime is 40988947423. The next prime is 40988947453. The reversal of 40988947449 is 94474988904.

It is not a de Polignac number, because 40988947449 - 2¹¹ = 40988945401 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40988947449.

It is not an unprimeable number, because it can be changed into a prime (40988947409) 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 15 ways as a sum of consecutive naturals, for example, 3311692 + ... + 3324045.

It is an arithmetic number, because the mean of its divisors is an integer number (3583298520).

Almost surely, 2^40988947449 is an apocalyptic number.

It is an amenable number.

40988947449 is a deficient number, since it is larger than the sum of its proper divisors (16343828871).

40988947449 is a wasteful number, since it uses less digits than its factorization.

40988947449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6635840.

The product of its (nonzero) digits is 83607552, while the sum is 66.

The spelling of 40988947449 in words is "forty billion, nine hundred eighty-eight million, nine hundred forty-seven thousand, four hundred forty-nine".