207147389 has 2 divisors, whose sum is σ = 207147390. Its totient is φ = 207147388.

The previous prime is 207147379. The next prime is 207147433. The reversal of 207147389 is 983741702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120340900 + 86806489 = 10970^2 + 9317^2 .

It is a cyclic number.

It is not a de Polignac number, because 207147389 - 2⁸ = 207147133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (207147379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103573694 + 103573695.

It is an arithmetic number, because the mean of its divisors is an integer number (103573695).

Almost surely, 2^207147389 is an apocalyptic number.

It is an amenable number.

207147389 is a deficient number, since it is larger than the sum of its proper divisors (1).

207147389 is an equidigital number, since it uses as much as digits as its factorization.

207147389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 207147389 is about 14392.6157803229. The cubic root of 207147389 is about 591.6885355227.

The spelling of 207147389 in words is "two hundred seven million, one hundred forty-seven thousand, three hundred eighty-nine".