392140394 has 8 divisors (see below), whose sum is σ = 622811268. Its totient is φ = 184536640.

The previous prime is 392140369. The next prime is 392140403. The reversal of 392140394 is 493041293.

It can be written as a sum of positive squares in 2 ways, for example, as 388287025 + 3853369 = 19705^2 + 1963^2 .

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

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, 5766737 + ... + 5766804.

Almost surely, 2^392140394 is an apocalyptic number.

392140394 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

392140394 is a deficient number, since it is larger than the sum of its proper divisors (230670874).

392140394 is a wasteful number, since it uses less digits than its factorization.

392140394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11533560.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 392140394 is about 19802.5350397367. The cubic root of 392140394 is about 731.9485031008.

The spelling of 392140394 in words is "three hundred ninety-two million, one hundred forty thousand, three hundred ninety-four".