143999856 has 480 divisors, whose sum is σ = 576296448. Its totient is φ = 33592320.

The previous prime is 143999813. The next prime is 143999861. The reversal of 143999856 is 658999341.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3891870 + ... + 3891906.

Almost surely, 2^143999856 is an apocalyptic number.

143999856 is a gapful number since it is divisible by the number (16) 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 143999856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288148224).

143999856 is an abundant number, since it is smaller than the sum of its proper divisors (432296592).

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

143999856 is a wasteful number, since it uses less digits than its factorization.

143999856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 73 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 143999856 is about 11999.9939999985. The cubic root of 143999856 is about 524.1481041256.

It can be divided in two parts, 143 and 999856, that added together give a palindrome (999999).

The spelling of 143999856 in words is "one hundred forty-three million, nine hundred ninety-nine thousand, eight hundred fifty-six".