143999645 has 16 divisors (see below), whose sum is σ = 179118000. Its totient is φ = 111003648.

The previous prime is 143999641. The next prime is 143999657. The reversal of 143999645 is 546999341.

It can be written as a sum of positive squares in 8 ways, for example, as 21631801 + 122367844 = 4651^2 + 11062^2 .

It is not a de Polignac number, because 143999645 - 2² = 143999641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 143999593 and 143999602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143999641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134171 + ... + 135239.

It is an arithmetic number, because the mean of its divisors is an integer number (11194875).

Almost surely, 2^143999645 is an apocalyptic number.

It is an amenable number.

143999645 is a deficient number, since it is larger than the sum of its proper divisors (35118355).

143999645 is a wasteful number, since it uses less digits than its factorization.

143999645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032.

The product of its digits is 1049760, while the sum is 50.

The square root of 143999645 is about 11999.9852083242. The cubic root of 143999645 is about 524.1478481177.

The spelling of 143999645 in words is "one hundred forty-three million, nine hundred ninety-nine thousand, six hundred forty-five".