39779943057 has 24 divisors (see below), whose sum is σ = 59173545600. Its totient is φ = 25740438048.

The previous prime is 39779943029. The next prime is 39779943103. The reversal of 39779943057 is 75034997793.

It is not a de Polignac number, because 39779943057 - 2⁸ = 39779942801 is a prime.

It is a super-3 number, since 3×39779943057³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39779942985 and 39779943003.

It is not an unprimeable number, because it can be changed into a prime (39779943257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 432198 + ... + 516095.

It is an arithmetic number, because the mean of its divisors is an integer number (2465564400).

Almost surely, 2^39779943057 is an apocalyptic number.

It is an amenable number.

39779943057 is a deficient number, since it is larger than the sum of its proper divisors (19393602543).

39779943057 is a wasteful number, since it uses less digits than its factorization.

39779943057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948437 (or 948434 counting only the distinct ones).

The product of its (nonzero) digits is 45008460, while the sum is 63.

The spelling of 39779943057 in words is "thirty-nine billion, seven hundred seventy-nine million, nine hundred forty-three thousand, fifty-seven".