39394979351754 has 16 divisors (see below), whose sum is σ = 84850724757792. Its totient is φ = 12121532108208.

The previous prime is 39394979351719. The next prime is 39394979351773. The reversal of 39394979351754 is 45715397949393.

It is a Harshad number since it is a multiple of its sum of digits (78), and also a Moran number because the ratio is a prime number: 505063837843 = 39394979351754 / (3 + 9 + 3 + 9 + 4 + 9 + 7 + 9 + 3 + 5 + 1 + 7 + 5 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 39394979351754.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252531918844 + ... + 252531918999.

It is an arithmetic number, because the mean of its divisors is an integer number (5303170297362).

Almost surely, 2^{39394979351754} is an apocalyptic number.

39394979351754 is an abundant number, since it is smaller than the sum of its proper divisors (45455745406038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39394979351754 is a wasteful number, since it uses less digits than its factorization.

39394979351754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505063837861.

The product of its digits is 3472081200, while the sum is 78.

The spelling of 39394979351754 in words is "thirty-nine trillion, three hundred ninety-four billion, nine hundred seventy-nine million, three hundred fifty-one thousand, seven hundred fifty-four".