394499023460 has 12 divisors (see below), whose sum is σ = 828447949308. Its totient is φ = 157799609376.

The previous prime is 394499023397. The next prime is 394499023531. The reversal of 394499023460 is 64320994493.

It can be written as a sum of positive squares in 2 ways, for example, as 79600722496 + 314898300964 = 282136^2 + 561158^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9862475567 + ... + 9862475606.

It is an arithmetic number, because the mean of its divisors is an integer number (69037329109).

Almost surely, 2^394499023460 is an apocalyptic number.

It is an amenable number.

394499023460 is an abundant number, since it is smaller than the sum of its proper divisors (433948925848).

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

394499023460 is a wasteful number, since it uses less digits than its factorization.

394499023460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19724951182 (or 19724951180 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 53.

The spelling of 394499023460 in words is "three hundred ninety-four billion, four hundred ninety-nine million, twenty-three thousand, four hundred sixty".