39779408893 has 16 divisors (see below), whose sum is σ = 48279314304. Its totient is φ = 31995694080.

The previous prime is 39779408887. The next prime is 39779408899. The reversal of 39779408893 is 39880497793.

It is an interprime number because it is at equal distance from previous prime (39779408887) and next prime (39779408899).

It is not a de Polignac number, because 39779408893 - 2⁹ = 39779408381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39779408899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455863 + ... + 536068.

It is an arithmetic number, because the mean of its divisors is an integer number (3017457144).

Almost surely, 2^39779408893 is an apocalyptic number.

It is an amenable number.

39779408893 is a deficient number, since it is larger than the sum of its proper divisors (8499905411).

39779408893 is a wasteful number, since it uses less digits than its factorization.

39779408893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992292.

The product of its (nonzero) digits is 82301184, while the sum is 67.

The spelling of 39779408893 in words is "thirty-nine billion, seven hundred seventy-nine million, four hundred eight thousand, eight hundred ninety-three".