39900338473 has 2 divisors, whose sum is σ = 39900338474. Its totient is φ = 39900338472.

The previous prime is 39900338419. The next prime is 39900338477. The reversal of 39900338473 is 37483300993.

39900338473 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., 22145308969 + 17755029504 = 148813^2 + 133248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39900338473 is a prime.

It is not a weakly prime, because it can be changed into another prime (39900338477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19950169236 + 19950169237.

It is an arithmetic number, because the mean of its divisors is an integer number (19950169237).

Almost surely, 2^39900338473 is an apocalyptic number.

It is an amenable number.

39900338473 is a deficient number, since it is larger than the sum of its proper divisors (1).

39900338473 is an equidigital number, since it uses as much as digits as its factorization.

39900338473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 49.

The spelling of 39900338473 in words is "thirty-nine billion, nine hundred million, three hundred thirty-eight thousand, four hundred seventy-three".