394426201892 has 6 divisors (see below), whose sum is σ = 690245853318. Its totient is φ = 197213100944.

The previous prime is 394426201891. The next prime is 394426201919. The reversal of 394426201892 is 298102624493.

It can be written as a sum of positive squares in only one way, i.e., 208306436836 + 186119765056 = 456406^2 + 431416^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 394426201892.

It is not an unprimeable number, because it can be changed into a prime (394426201891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49303275233 + ... + 49303275240.

It is an arithmetic number, because the mean of its divisors is an integer number (115040975553).

Almost surely, 2^394426201892 is an apocalyptic number.

It is an amenable number.

394426201892 is a deficient number, since it is larger than the sum of its proper divisors (295819651426).

394426201892 is a wasteful number, since it uses less digits than its factorization.

394426201892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98606550477 (or 98606550475 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 394426201892 in words is "three hundred ninety-four billion, four hundred twenty-six million, two hundred one thousand, eight hundred ninety-two".