394362172917340 has 36 divisors (see below), whose sum is σ = 838776305268216. Its totient is φ = 155748098621856.

The previous prime is 394362172917289. The next prime is 394362172917341. The reversal of 394362172917340 is 43719271263493.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394362172917341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1579598674 + ... + 1579848313.

It is an arithmetic number, because the mean of its divisors is an integer number (23299341813006).

Almost surely, 2^{394362172917340} is an apocalyptic number.

It is an amenable number.

394362172917340 is an abundant number, since it is smaller than the sum of its proper divisors (444414132350876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394362172917340 is a wasteful number, since it uses less digits than its factorization.

394362172917340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159447154 (or 3159447073 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 61.

The spelling of 394362172917340 in words is "three hundred ninety-four trillion, three hundred sixty-two billion, one hundred seventy-two million, nine hundred seventeen thousand, three hundred forty".