393975400448 has 96 divisors (see below), whose sum is σ = 947679969600. Its totient is φ = 159959826432.

The previous prime is 393975400433. The next prime is 393975400453. The reversal of 393975400448 is 844004579393.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 393975400393 and 393975400402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450815 + ... + 995582.

It is an arithmetic number, because the mean of its divisors is an integer number (9871666350).

Almost surely, 2^393975400448 is an apocalyptic number.

393975400448 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

393975400448 is an abundant number, since it is smaller than the sum of its proper divisors (553704569152).

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

393975400448 is a wasteful number, since it uses less digits than its factorization.

393975400448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446445 (or 1446425 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 393975400448 in words is "three hundred ninety-three billion, nine hundred seventy-five million, four hundred thousand, four hundred forty-eight".