265940039 has 2 divisors, whose sum is σ = 265940040. Its totient is φ = 265940038.

The previous prime is 265940023. The next prime is 265940069. The reversal of 265940039 is 930049562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265940039 - 2⁴ = 265940023 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 265939984 and 265940011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265940009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132970019 + 132970020.

It is an arithmetic number, because the mean of its divisors is an integer number (132970020).

Almost surely, 2^265940039 is an apocalyptic number.

265940039 is a deficient number, since it is larger than the sum of its proper divisors (1).

265940039 is an equidigital number, since it uses as much as digits as its factorization.

265940039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 265940039 is about 16307.6681042999. The cubic root of 265940039 is about 643.0744318427.

The spelling of 265940039 in words is "two hundred sixty-five million, nine hundred forty thousand, thirty-nine".