939392392394 has 4 divisors (see below), whose sum is σ = 1409088588594. Its totient is φ = 469696196196.

The previous prime is 939392392363. The next prime is 939392392481. The reversal of 939392392394 is 493293293939.

939392392394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 493293293939 = 46511 ⋅10605949.

It can be written as a sum of positive squares in only one way, i.e., 617945349025 + 321447043369 = 786095^2 + 566963^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 939392392394.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 234848098097 + ... + 234848098100.

Almost surely, 2^939392392394 is an apocalyptic number.

939392392394 is a deficient number, since it is larger than the sum of its proper divisors (469696196200).

939392392394 is a wasteful number, since it uses less digits than its factorization.

939392392394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469696196199.

The product of its digits is 76527504, while the sum is 65.

The spelling of 939392392394 in words is "nine hundred thirty-nine billion, three hundred ninety-two million, three hundred ninety-two thousand, three hundred ninety-four".