40445173349 has 12 divisors (see below), whose sum is σ = 47054697228. Its totient is φ = 34662700800.

The previous prime is 40445173309. The next prime is 40445173421. The reversal of 40445173349 is 94337154404.

It can be written as a sum of positive squares in 2 ways, for example, as 24301692100 + 16143481249 = 155890^2 + 127057^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40445173349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40445173309) 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 11 ways as a sum of consecutive naturals, for example, 349319 + ... + 450459.

It is an arithmetic number, because the mean of its divisors is an integer number (3921224769).

Almost surely, 2^40445173349 is an apocalyptic number.

40445173349 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

40445173349 is a deficient number, since it is larger than the sum of its proper divisors (6609523879).

40445173349 is a wasteful number, since it uses less digits than its factorization.

40445173349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109316 (or 109309 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 40445173349 in words is "forty billion, four hundred forty-five million, one hundred seventy-three thousand, three hundred forty-nine".