283397989 has 8 divisors (see below), whose sum is σ = 325337600. Its totient is φ = 241821936.

The previous prime is 283397987. The next prime is 283397999. The reversal of 283397989 is 989793382.

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

It is a cyclic number.

It is not a de Polignac number, because 283397989 - 2¹ = 283397987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283397987) 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, 89214 + ... + 92335.

It is an arithmetic number, because the mean of its divisors is an integer number (40667200).

Almost surely, 2^283397989 is an apocalyptic number.

It is an amenable number.

283397989 is a deficient number, since it is larger than the sum of its proper divisors (41939611).

283397989 is a wasteful number, since it uses less digits than its factorization.

283397989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181779.

The product of its digits is 5878656, while the sum is 58.

The square root of 283397989 is about 16834.4286805344. The cubic root of 283397989 is about 656.8490680338.

The spelling of 283397989 in words is "two hundred eighty-three million, three hundred ninety-seven thousand, nine hundred eighty-nine".