40884728449 has 4 divisors (see below), whose sum is σ = 40885495300. Its totient is φ = 40883961600.

The previous prime is 40884728413. The next prime is 40884728461. The reversal of 40884728449 is 94482748804.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36259776400 + 4624952049 = 190420^2 + 68007^2 .

It is a cyclic number.

It is not a de Polignac number, because 40884728449 - 2¹¹ = 40884726401 is a prime.

It is a super-2 number, since 2×40884728449² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40884728393 and 40884728402.

It is not an unprimeable number, because it can be changed into a prime (40884728849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296952 + ... + 412249.

It is an arithmetic number, because the mean of its divisors is an integer number (10221373825).

Almost surely, 2^40884728449 is an apocalyptic number.

It is an amenable number.

40884728449 is a deficient number, since it is larger than the sum of its proper divisors (766851).

40884728449 is an equidigital number, since it uses as much as digits as its factorization.

40884728449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766850.

The product of its (nonzero) digits is 16515072, while the sum is 58.

The spelling of 40884728449 in words is "forty billion, eight hundred eighty-four million, seven hundred twenty-eight thousand, four hundred forty-nine".