260740399 has 2 divisors, whose sum is σ = 260740400. Its totient is φ = 260740398.

The previous prime is 260740393. The next prime is 260740409. The reversal of 260740399 is 993047062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260740399 - 2⁵ = 260740367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260740393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130370199 + 130370200.

It is an arithmetic number, because the mean of its divisors is an integer number (130370200).

Almost surely, 2^260740399 is an apocalyptic number.

260740399 is a deficient number, since it is larger than the sum of its proper divisors (1).

260740399 is an equidigital number, since it uses as much as digits as its factorization.

260740399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 260740399 is about 16147.4579733158. The cubic root of 260740399 is about 638.8557018353.

The spelling of 260740399 in words is "two hundred sixty million, seven hundred forty thousand, three hundred ninety-nine".