394345297 has 8 divisors (see below), whose sum is σ = 411645032. Its totient is φ = 377395200.

The previous prime is 394345279. The next prime is 394345307. The reversal of 394345297 is 792543493.

It can be written as a sum of positive squares in 4 ways, for example, as 4835601 + 389509696 = 2199^2 + 19736^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 394345297 - 2¹¹ = 394343249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394345597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85104 + ... + 89617.

It is an arithmetic number, because the mean of its divisors is an integer number (51455629).

Almost surely, 2^394345297 is an apocalyptic number.

394345297 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

394345297 is a deficient number, since it is larger than the sum of its proper divisors (17299735).

394345297 is a wasteful number, since it uses less digits than its factorization.

394345297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174819.

The product of its digits is 816480, while the sum is 46.

The square root of 394345297 is about 19858.1292422020. The cubic root of 394345297 is about 733.3177916587.

The spelling of 394345297 in words is "three hundred ninety-four million, three hundred forty-five thousand, two hundred ninety-seven".