143764989 has 8 divisors (see below), whose sum is σ = 194386752. Its totient is φ = 94493280.

The previous prime is 143764987. The next prime is 143765003. The reversal of 143764989 is 989467341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 143764989 - 2¹ = 143764987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143764981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337264 + ... + 337689.

It is an arithmetic number, because the mean of its divisors is an integer number (24298344).

Almost surely, 2^143764989 is an apocalyptic number.

It is an amenable number.

143764989 is a deficient number, since it is larger than the sum of its proper divisors (50621763).

143764989 is an equidigital number, since it uses as much as digits as its factorization.

143764989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675027.

The product of its digits is 1306368, while the sum is 51.

The square root of 143764989 is about 11990.2038764985. The cubic root of 143764989 is about 523.8629832791.

The spelling of 143764989 in words is "one hundred forty-three million, seven hundred sixty-four thousand, nine hundred eighty-nine".