3928917926390 has 8 divisors (see below), whose sum is σ = 7072052267520. Its totient is φ = 1571567170552.

The previous prime is 3928917926369. The next prime is 3928917926429. The reversal of 3928917926390 is 936297198293.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3928917926390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196445896310 + ... + 196445896329.

It is an arithmetic number, because the mean of its divisors is an integer number (884006533440).

Almost surely, 2^{3928917926390} is an apocalyptic number.

3928917926390 is a deficient number, since it is larger than the sum of its proper divisors (3143134341130).

3928917926390 is a wasteful number, since it uses less digits than its factorization.

3928917926390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392891792646.

The product of its (nonzero) digits is 79361856, while the sum is 68.

The spelling of 3928917926390 in words is "three trillion, nine hundred twenty-eight billion, nine hundred seventeen million, nine hundred twenty-six thousand, three hundred ninety".