39953840019 has 32 divisors (see below), whose sum is σ = 55550668800. Its totient is φ = 25514455680.

The previous prime is 39953839921. The next prime is 39953840051. The reversal of 39953840019 is 91004835993.

It is a happy number.

It is not a de Polignac number, because 39953840019 - 2⁸ = 39953839763 is a prime.

It is a super-2 number, since 2×39953840019² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39953840219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19593802 + ... + 19595840.

It is an arithmetic number, because the mean of its divisors is an integer number (1735958400).

Almost surely, 2^39953840019 is an apocalyptic number.

39953840019 is a deficient number, since it is larger than the sum of its proper divisors (15596828781).

39953840019 is a wasteful number, since it uses less digits than its factorization.

39953840019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115.

The product of its (nonzero) digits is 1049760, while the sum is 51.

The spelling of 39953840019 in words is "thirty-nine billion, nine hundred fifty-three million, eight hundred forty thousand, nineteen".