260406089 has 2 divisors, whose sum is σ = 260406090. Its totient is φ = 260406088.

The previous prime is 260406071. The next prime is 260406101. The reversal of 260406089 is 980604062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188156089 + 72250000 = 13717^2 + 8500^2 .

It is a cyclic number.

It is not a de Polignac number, because 260406089 - 2⁸ = 260405833 is a prime.

It is a super-2 number, since 2×260406089² = 135622662376551842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (260406059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130203044 + 130203045.

It is an arithmetic number, because the mean of its divisors is an integer number (130203045).

Almost surely, 2^260406089 is an apocalyptic number.

It is an amenable number.

260406089 is a deficient number, since it is larger than the sum of its proper divisors (1).

260406089 is an equidigital number, since it uses as much as digits as its factorization.

260406089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 260406089 is about 16137.1028688547. The cubic root of 260406089 is about 638.5825473941.

The spelling of 260406089 in words is "two hundred sixty million, four hundred six thousand, eighty-nine".