396389136000 has 2048 divisors, whose sum is σ = 1693749657600. Its totient is φ = 80510976000.

The previous prime is 396389135999. The next prime is 396389136001. The reversal of 396389136000 is 631983693.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (396389135999) and next prime (396389136001).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (396389136001) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 5017583961 + ... + 5017584039.

It is an arithmetic number, because the mean of its divisors is an integer number (827026200).

Almost surely, 2^396389136000 is an apocalyptic number.

396389136000 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 396389136000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (846874828800).

396389136000 is an abundant number, since it is smaller than the sum of its proper divisors (1297360521600).

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

396389136000 is a wasteful number, since it uses less digits than its factorization.

396389136000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 48.

The spelling of 396389136000 in words is "three hundred ninety-six billion, three hundred eighty-nine million, one hundred thirty-six thousand".