394234619 has 2 divisors, whose sum is σ = 394234620. Its totient is φ = 394234618.

The previous prime is 394234609. The next prime is 394234669. The reversal of 394234619 is 916432493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 394234619 - 2²⁰ = 393186043 is a prime.

It is a super-2 number, since 2×394234619² = 310841869636150322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (394234609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197117309 + 197117310.

It is an arithmetic number, because the mean of its divisors is an integer number (197117310).

Almost surely, 2^394234619 is an apocalyptic number.

394234619 is a deficient number, since it is larger than the sum of its proper divisors (1).

394234619 is an equidigital number, since it uses as much as digits as its factorization.

394234619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 41.

The square root of 394234619 is about 19855.3423289552. The cubic root of 394234619 is about 733.2491802654.

The spelling of 394234619 in words is "three hundred ninety-four million, two hundred thirty-four thousand, six hundred nineteen".