399283245504 has 1344 divisors, whose sum is σ = 1487402542080. Its totient is φ = 104509440000.

The previous prime is 399283245503. The next prime is 399283245593. The reversal of 399283245504 is 405542382993.

399283245504 is a `hidden beast` number, since 3 + 9 + 9 + 2 + 83 + 2 + 4 + 550 + 4 = 666.

It is a super-2 number, since 2×399283245504² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399283245503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2644259829 + ... + 2644259979.

It is an arithmetic number, because the mean of its divisors is an integer number (1106698320).

Almost surely, 2^399283245504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399283245504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (743701271040).

399283245504 is an abundant number, since it is smaller than the sum of its proper divisors (1088119296576).

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

399283245504 is a wasteful number, since it uses less digits than its factorization.

399283245504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 399283245504 in words is "three hundred ninety-nine billion, two hundred eighty-three million, two hundred forty-five thousand, five hundred four".