394202857389 has 32 divisors (see below), whose sum is σ = 581780275200. Its totient is φ = 235438459200.

The previous prime is 394202857361. The next prime is 394202857403. The reversal of 394202857389 is 983758202493.

It is not a de Polignac number, because 394202857389 - 2⁵ = 394202857357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394202857289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 308824 + ... + 940094.

It is an arithmetic number, because the mean of its divisors is an integer number (18180633600).

Almost surely, 2^394202857389 is an apocalyptic number.

It is an amenable number.

394202857389 is a deficient number, since it is larger than the sum of its proper divisors (187577417811).

394202857389 is a wasteful number, since it uses less digits than its factorization.

394202857389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631561.

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 394202857389 in words is "three hundred ninety-four billion, two hundred two million, eight hundred fifty-seven thousand, three hundred eighty-nine".