394947876 has 48 divisors (see below), whose sum is σ = 978868800. Its totient is φ = 123509760.

The previous prime is 394947863. The next prime is 394947877. The reversal of 394947876 is 678749493.

It is a super-2 number, since 2×394947876² = 311967649513822752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (394947877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64600 + ... + 70448.

It is an arithmetic number, because the mean of its divisors is an integer number (20393100).

Almost surely, 2^394947876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394947876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489434400).

394947876 is an abundant number, since it is smaller than the sum of its proper divisors (583920924).

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

394947876 is a wasteful number, since it uses less digits than its factorization.

394947876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6204 (or 6202 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 57.

The square root of 394947876 is about 19873.2955495559. The cubic root of 394947876 is about 733.6911167821.

The spelling of 394947876 in words is "three hundred ninety-four million, nine hundred forty-seven thousand, eight hundred seventy-six".