394036859297 has 4 divisors (see below), whose sum is σ = 394038557076. Its totient is φ = 394035161520.

The previous prime is 394036859263. The next prime is 394036859329. The reversal of 394036859297 is 792958630493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 792958630493 = 947 ⋅837337519.

It can be written as a sum of positive squares in 2 ways, for example, as 196780072801 + 197256786496 = 443599^2 + 444136^2 .

It is a cyclic number.

It is not a de Polignac number, because 394036859297 - 2¹⁸ = 394036597153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394036859897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432758 + ... + 987599.

It is an arithmetic number, because the mean of its divisors is an integer number (98509639269).

Almost surely, 2^394036859297 is an apocalyptic number.

It is an amenable number.

394036859297 is a deficient number, since it is larger than the sum of its proper divisors (1697779).

394036859297 is a wasteful number, since it uses less digits than its factorization.

394036859297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697778.

The product of its (nonzero) digits is 88179840, while the sum is 65.

The spelling of 394036859297 in words is "three hundred ninety-four billion, thirty-six million, eight hundred fifty-nine thousand, two hundred ninety-seven".