39954658829 has 2 divisors, whose sum is σ = 39954658830. Its totient is φ = 39954658828.

The previous prime is 39954658747. The next prime is 39954658837. The reversal of 39954658829 is 92885645993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26544555625 + 13410103204 = 162925^2 + 115802^2 .

It is a cyclic number.

It is not a de Polignac number, because 39954658829 - 2²⁰ = 39953610253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39954654829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19977329414 + 19977329415.

It is an arithmetic number, because the mean of its divisors is an integer number (19977329415).

Almost surely, 2^39954658829 is an apocalyptic number.

It is an amenable number.

39954658829 is a deficient number, since it is larger than the sum of its proper divisors (1).

39954658829 is an equidigital number, since it uses as much as digits as its factorization.

39954658829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 167961600, while the sum is 68.

The spelling of 39954658829 in words is "thirty-nine billion, nine hundred fifty-four million, six hundred fifty-eight thousand, eight hundred twenty-nine".