393698478347 has 4 divisors (see below), whose sum is σ = 393702440616. Its totient is φ = 393694516080.

The previous prime is 393698478211. The next prime is 393698478353. The reversal of 393698478347 is 743874896393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 743874896393 = 18121 ⋅41050433.

It is a cyclic number.

It is not a de Polignac number, because 393698478347 - 2¹⁴ = 393698461963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (393698478647) 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, 1828154 + ... + 2032127.

It is an arithmetic number, because the mean of its divisors is an integer number (98425610154).

Almost surely, 2^393698478347 is an apocalyptic number.

393698478347 is a deficient number, since it is larger than the sum of its proper divisors (3962269).

393698478347 is a wasteful number, since it uses less digits than its factorization.

393698478347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962268.

The product of its digits is 658409472, while the sum is 71.

The spelling of 393698478347 in words is "three hundred ninety-three billion, six hundred ninety-eight million, four hundred seventy-eight thousand, three hundred forty-seven".