40399048973 has 2 divisors, whose sum is σ = 40399048974. Its totient is φ = 40399048972.

The previous prime is 40399048939. The next prime is 40399048979. The reversal of 40399048973 is 37984099304.

40399048973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33921535684 + 6477513289 = 184178^2 + 80483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40399048973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40399048979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20199524486 + 20199524487.

It is an arithmetic number, because the mean of its divisors is an integer number (20199524487).

Almost surely, 2^40399048973 is an apocalyptic number.

It is an amenable number.

40399048973 is a deficient number, since it is larger than the sum of its proper divisors (1).

40399048973 is an equidigital number, since it uses as much as digits as its factorization.

40399048973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 40399048973 in words is "forty billion, three hundred ninety-nine million, forty-eight thousand, nine hundred seventy-three".