143961459 has 4 divisors (see below), whose sum is σ = 191948616. Its totient is φ = 95974304.

The previous prime is 143961407. The next prime is 143961473. The reversal of 143961459 is 954169341.

143961459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 143961459 - 2¹³ = 143953267 is a prime.

It is a super-3 number, since 3×143961459³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 143961459.

It is not an unprimeable number, because it can be changed into a prime (143961479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23993574 + ... + 23993579.

It is an arithmetic number, because the mean of its divisors is an integer number (47987154).

Almost surely, 2^143961459 is an apocalyptic number.

143961459 is a deficient number, since it is larger than the sum of its proper divisors (47987157).

143961459 is an equidigital number, since it uses as much as digits as its factorization.

143961459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47987156.

The product of its digits is 116640, while the sum is 42.

The square root of 143961459 is about 11998.3940175342. The cubic root of 143961459 is about 524.1015126350.

The spelling of 143961459 in words is "one hundred forty-three million, nine hundred sixty-one thousand, four hundred fifty-nine".