394891952860 has 24 divisors (see below), whose sum is σ = 829312905456. Its totient is φ = 157949199360.

The previous prime is 394891952837. The next prime is 394891952863. The reversal of 394891952860 is 68259198493.

It is a junction number, because it is equal to n+sod(n) for n = 394891952792 and 394891952801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394891952863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36946 + ... + 889465.

It is an arithmetic number, because the mean of its divisors is an integer number (34554704394).

Almost surely, 2^394891952860 is an apocalyptic number.

It is an amenable number.

394891952860 is an abundant number, since it is smaller than the sum of its proper divisors (434420952596).

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

394891952860 is a wasteful number, since it uses less digits than its factorization.

394891952860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947733 (or 947731 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 64.

The spelling of 394891952860 in words is "three hundred ninety-four billion, eight hundred ninety-one million, nine hundred fifty-two thousand, eight hundred sixty".