394026490080 has 144 divisors (see below), whose sum is σ = 1415384727120. Its totient is φ = 99543527424.

The previous prime is 394026490019. The next prime is 394026490087. The reversal of 394026490080 is 80094620493.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394026490087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7173417 + ... + 7228136.

It is an arithmetic number, because the mean of its divisors is an integer number (9829060605).

Almost surely, 2^394026490080 is an apocalyptic number.

394026490080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

394026490080 is an abundant number, since it is smaller than the sum of its proper divisors (1021358237040).

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

394026490080 is a wasteful number, since it uses less digits than its factorization.

394026490080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14401593 (or 14401582 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 394026490080 in words is "three hundred ninety-four billion, twenty-six million, four hundred ninety thousand, eighty".