396847123920 has 240 divisors, whose sum is σ = 1445594142720. Its totient is φ = 96982354944.

The previous prime is 396847123919. The next prime is 396847123957. The reversal of 396847123920 is 29321748693.

396847123920 is a `hidden beast` number, since 3 + 9 + 68 + 471 + 23 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1148529 + ... + 1453551.

It is an arithmetic number, because the mean of its divisors is an integer number (6023308928).

Almost surely, 2^396847123920 is an apocalyptic number.

396847123920 is a gapful number since it is divisible by the number (30) 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 396847123920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722797071360).

396847123920 is an abundant number, since it is smaller than the sum of its proper divisors (1048747018800).

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

396847123920 is a wasteful number, since it uses less digits than its factorization.

396847123920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305194 (or 305185 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 396847123920 in words is "three hundred ninety-six billion, eight hundred forty-seven million, one hundred twenty-three thousand, nine hundred twenty".