39909454353 has 20 divisors (see below), whose sum is σ = 59633255220. Its totient is φ = 26599417632.

The previous prime is 39909454331. The next prime is 39909454357. The reversal of 39909454353 is 35345490993.

39909454353 is a `hidden beast` number, since 3 + 9 + 9 + 0 + 94 + 543 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5726251584 + 34183202769 = 75672^2 + 184887^2 .

It is not a de Polignac number, because 39909454353 - 2⁸ = 39909454097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39909454353.

It is not an unprimeable number, because it can be changed into a prime (39909454357) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 261351 + ... + 384867.

It is an arithmetic number, because the mean of its divisors is an integer number (2981662761).

Almost surely, 2^39909454353 is an apocalyptic number.

It is an amenable number.

39909454353 is a deficient number, since it is larger than the sum of its proper divisors (19723800867).

39909454353 is a wasteful number, since it uses less digits than its factorization.

39909454353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127518 (or 127509 counting only the distinct ones).

The product of its (nonzero) digits is 7873200, while the sum is 54.

The spelling of 39909454353 in words is "thirty-nine billion, nine hundred nine million, four hundred fifty-four thousand, three hundred fifty-three".