689354299 has 2 divisors, whose sum is σ = 689354300. Its totient is φ = 689354298.

The previous prime is 689354293. The next prime is 689354317. The reversal of 689354299 is 992453986.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-689354299 is a prime.

It is not a weakly prime, because it can be changed into another prime (689354293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344677149 + 344677150.

It is an arithmetic number, because the mean of its divisors is an integer number (344677150).

Almost surely, 2^689354299 is an apocalyptic number.

689354299 is a deficient number, since it is larger than the sum of its proper divisors (1).

689354299 is an equidigital number, since it uses as much as digits as its factorization.

689354299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 55.

The square root of 689354299 is about 26255.5574878920. The cubic root of 689354299 is about 883.3798650066.

The spelling of 689354299 in words is "six hundred eighty-nine million, three hundred fifty-four thousand, two hundred ninety-nine".