394906267392 has 288 divisors, whose sum is σ = 1297801989120. Its totient is φ = 103810498560.

The previous prime is 394906267373. The next prime is 394906267447. The reversal of 394906267392 is 293762609493.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21726084 + ... + 21744252.

Almost surely, 2^394906267392 is an apocalyptic number.

394906267392 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394906267392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648900994560).

394906267392 is an abundant number, since it is smaller than the sum of its proper divisors (902895721728).

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

394906267392 is a wasteful number, since it uses less digits than its factorization.

394906267392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18519 (or 18505 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 60.

The spelling of 394906267392 in words is "three hundred ninety-four billion, nine hundred six million, two hundred sixty-seven thousand, three hundred ninety-two".