288737989 has 2 divisors, whose sum is σ = 288737990. Its totient is φ = 288737988.

The previous prime is 288737971. The next prime is 288738001. The reversal of 288737989 is 989737882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283652964 + 5085025 = 16842^2 + 2255^2 .

It is a cyclic number.

It is not a de Polignac number, because 288737989 - 2⁷ = 288737861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288737909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144368994 + 144368995.

It is an arithmetic number, because the mean of its divisors is an integer number (144368995).

Almost surely, 2^288737989 is an apocalyptic number.

It is an amenable number.

288737989 is a deficient number, since it is larger than the sum of its proper divisors (1).

288737989 is an equidigital number, since it uses as much as digits as its factorization.

288737989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12192768, while the sum is 61.

The square root of 288737989 is about 16992.2920466899. The cubic root of 288737989 is about 660.9490394910.

The spelling of 288737989 in words is "two hundred eighty-eight million, seven hundred thirty-seven thousand, nine hundred eighty-nine".