394046997 has 16 divisors (see below), whose sum is σ = 540528768. Its totient is φ = 255228480.

The previous prime is 394046993. The next prime is 394046999. The reversal of 394046997 is 799640493.

It is not a de Polignac number, because 394046997 - 2² = 394046993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394046993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4347 + ... + 28407.

It is an arithmetic number, because the mean of its divisors is an integer number (33783048).

Almost surely, 2^394046997 is an apocalyptic number.

It is an amenable number.

394046997 is a deficient number, since it is larger than the sum of its proper divisors (146481771).

394046997 is a wasteful number, since it uses less digits than its factorization.

394046997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24220.

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 394046997 is about 19850.6170433062. The cubic root of 394046997 is about 733.1328404842.

The spelling of 394046997 in words is "three hundred ninety-four million, forty-six thousand, nine hundred ninety-seven".