143649059 has 4 divisors (see below), whose sum is σ = 147531504. Its totient is φ = 139766616.

The previous prime is 143649047. The next prime is 143649091. The reversal of 143649059 is 950946341.

143649059 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, and also an emirpimes, since its reverse is a distinct semiprime: 950946341 = 977 ⋅973333.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143649059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143649959) 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, 1941167 + ... + 1941240.

It is an arithmetic number, because the mean of its divisors is an integer number (36882876).

Almost surely, 2^143649059 is an apocalyptic number.

143649059 is a deficient number, since it is larger than the sum of its proper divisors (3882445).

143649059 is an equidigital number, since it uses as much as digits as its factorization.

143649059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3882444.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 143649059 is about 11985.3685383471. The cubic root of 143649059 is about 523.7221335777.

The spelling of 143649059 in words is "one hundred forty-three million, six hundred forty-nine thousand, fifty-nine".