260039389 has 2 divisors, whose sum is σ = 260039390. Its totient is φ = 260039388.

The previous prime is 260039387. The next prime is 260039459. The reversal of 260039389 is 983930062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211848025 + 48191364 = 14555^2 + 6942^2 .

It is a cyclic number.

It is not a de Polignac number, because 260039389 - 2¹ = 260039387 is a prime.

Together with 260039387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260039387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130019694 + 130019695.

It is an arithmetic number, because the mean of its divisors is an integer number (130019695).

Almost surely, 2^260039389 is an apocalyptic number.

It is an amenable number.

260039389 is a deficient number, since it is larger than the sum of its proper divisors (1).

260039389 is an equidigital number, since it uses as much as digits as its factorization.

260039389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 260039389 is about 16125.7368513814. The cubic root of 260039389 is about 638.2826590870.

The spelling of 260039389 in words is "two hundred sixty million, thirty-nine thousand, three hundred eighty-nine".