143697089 has 4 divisors (see below), whose sum is σ = 143839956. Its totient is φ = 143554224.

The previous prime is 143697079. The next prime is 143697097. The reversal of 143697089 is 980796341.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32035600 + 111661489 = 5660^2 + 10567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143697089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143697049) 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, 69914 + ... + 71939.

It is an arithmetic number, because the mean of its divisors is an integer number (35959989).

Almost surely, 2^143697089 is an apocalyptic number.

It is an amenable number.

143697089 is a deficient number, since it is larger than the sum of its proper divisors (142867).

143697089 is a wasteful number, since it uses less digits than its factorization.

143697089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142866.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 143697089 is about 11987.3720639680. The cubic root of 143697089 is about 523.7804970441.

The spelling of 143697089 in words is "one hundred forty-three million, six hundred ninety-seven thousand, eighty-nine".