394497283 has 4 divisors (see below), whose sum is σ = 396677008. Its totient is φ = 392317560.

The previous prime is 394497281. The next prime is 394497319. The reversal of 394497283 is 382794493.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 382794493 = 5527 ⋅69259.

It is a cyclic number.

It is not a de Polignac number, because 394497283 - 2¹ = 394497281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394497281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1089591 + ... + 1089952.

It is an arithmetic number, because the mean of its divisors is an integer number (99169252).

Almost surely, 2^394497283 is an apocalyptic number.

394497283 is a deficient number, since it is larger than the sum of its proper divisors (2179725).

394497283 is a wasteful number, since it uses less digits than its factorization.

394497283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179724.

The product of its digits is 1306368, while the sum is 49.

The square root of 394497283 is about 19861.9556690674. The cubic root of 394497283 is about 733.4119897495.

The spelling of 394497283 in words is "three hundred ninety-four million, four hundred ninety-seven thousand, two hundred eighty-three".