396978488850 has 48 divisors (see below), whose sum is σ = 984554252352. Its totient is φ = 105855812160.

The previous prime is 396978488827. The next prime is 396978488909. The reversal of 396978488850 is 58884879693.

It is a Harshad number since it is a multiple of its sum of digits (75).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3840444 + ... + 3942456.

It is an arithmetic number, because the mean of its divisors is an integer number (20511546924).

Almost surely, 2^396978488850 is an apocalyptic number.

396978488850 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

396978488850 is an abundant number, since it is smaller than the sum of its proper divisors (587575763502).

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

396978488850 is a wasteful number, since it uses less digits than its factorization.

396978488850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127971 (or 127966 counting only the distinct ones).

The product of its (nonzero) digits is 836075520, while the sum is 75.

The spelling of 396978488850 in words is "three hundred ninety-six billion, nine hundred seventy-eight million, four hundred eighty-eight thousand, eight hundred fifty".