39954659807 has 2 divisors, whose sum is σ = 39954659808. Its totient is φ = 39954659806.

The previous prime is 39954659779. The next prime is 39954659809. The reversal of 39954659807 is 70895645993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39954659807 - 2⁶ = 39954659743 is a prime.

Together with 39954659809, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39954659809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19977329903 + 19977329904.

It is an arithmetic number, because the mean of its divisors is an integer number (19977329904).

Almost surely, 2^39954659807 is an apocalyptic number.

39954659807 is a deficient number, since it is larger than the sum of its proper divisors (1).

39954659807 is an equidigital number, since it uses as much as digits as its factorization.

39954659807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73483200, while the sum is 65.

The spelling of 39954659807 in words is "thirty-nine billion, nine hundred fifty-four million, six hundred fifty-nine thousand, eight hundred seven".