207432989 has 8 divisors (see below), whose sum is σ = 217995360. Its totient is φ = 197131536.

The previous prime is 207432983. The next prime is 207432991. The reversal of 207432989 is 989234702.

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 207432989 - 2²⁰ = 206384413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207432983) 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, 63599 + ... + 66780.

It is an arithmetic number, because the mean of its divisors is an integer number (27249420).

Almost surely, 2^207432989 is an apocalyptic number.

It is an amenable number.

207432989 is a deficient number, since it is larger than the sum of its proper divisors (10562371).

207432989 is a wasteful number, since it uses less digits than its factorization.

207432989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130459.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 207432989 is about 14402.5341173003. The cubic root of 207432989 is about 591.9603365881.

It can be divided in two parts, 20743 and 2989, that added together give a palindrome (23732).

The spelling of 207432989 in words is "two hundred seven million, four hundred thirty-two thousand, nine hundred eighty-nine".