394089162522 has 128 divisors (see below), whose sum is σ = 908173873152. Its totient is φ = 112839091200.

The previous prime is 394089162521. The next prime is 394089162547. The reversal of 394089162522 is 225261980493.

It is not an unprimeable number, because it can be changed into a prime (394089162521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67698372 + ... + 67704192.

It is an arithmetic number, because the mean of its divisors is an integer number (7095108384).

Almost surely, 2^394089162522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394089162522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454086936576).

394089162522 is an abundant number, since it is smaller than the sum of its proper divisors (514084710630).

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

394089162522 is a wasteful number, since it uses less digits than its factorization.

394089162522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6396.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 394089162522 in words is "three hundred ninety-four billion, eighty-nine million, one hundred sixty-two thousand, five hundred twenty-two".