40749485447 has 12 divisors (see below), whose sum is σ = 44798088888. Its totient is φ = 37038922800.

The previous prime is 40749485437. The next prime is 40749485477. The reversal of 40749485447 is 74458494704.

It is not a de Polignac number, because 40749485447 - 2⁴ = 40749485431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40749485392 and 40749485401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40749485437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 822572 + ... + 870702.

It is an arithmetic number, because the mean of its divisors is an integer number (3733174074).

Almost surely, 2^40749485447 is an apocalyptic number.

40749485447 is a deficient number, since it is larger than the sum of its proper divisors (4048603441).

40749485447 is a wasteful number, since it uses less digits than its factorization.

40749485447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55150 (or 55139 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 56.

The spelling of 40749485447 in words is "forty billion, seven hundred forty-nine million, four hundred eighty-five thousand, four hundred forty-seven".