397378963800 has 768 divisors, whose sum is σ = 1690591795200. Its totient is φ = 83545344000.

The previous prime is 397378963747. The next prime is 397378963801. The reversal of 397378963800 is 8369873793.

397378963800 is a `hidden beast` number, since 39 + 73 + 78 + 96 + 380 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397378963801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 155772525 + ... + 155775075.

It is an arithmetic number, because the mean of its divisors is an integer number (2201291400).

Almost surely, 2^397378963800 is an apocalyptic number.

397378963800 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 397378963800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (845295897600).

397378963800 is an abundant number, since it is smaller than the sum of its proper divisors (1293212831400).

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

397378963800 is a wasteful number, since it uses less digits than its factorization.

397378963800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913 (or 2898 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 63.

The spelling of 397378963800 in words is "three hundred ninety-seven billion, three hundred seventy-eight million, nine hundred sixty-three thousand, eight hundred".