394238422 has 4 divisors (see below), whose sum is σ = 591357636. Its totient is φ = 197119210.

The previous prime is 394238419. The next prime is 394238431. The reversal of 394238422 is 224832493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 224832493 = 557 ⋅403649.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98559604 + ... + 98559607.

It is an arithmetic number, because the mean of its divisors is an integer number (147839409).

Almost surely, 2^394238422 is an apocalyptic number.

394238422 is a deficient number, since it is larger than the sum of its proper divisors (197119214).

394238422 is a wasteful number, since it uses less digits than its factorization.

394238422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197119213.

The product of its digits is 82944, while the sum is 37.

The square root of 394238422 is about 19855.4380964007. The cubic root of 394238422 is about 733.2515380303.

The spelling of 394238422 in words is "three hundred ninety-four million, two hundred thirty-eight thousand, four hundred twenty-two".