905139707 has 2 divisors, whose sum is σ = 905139708. Its totient is φ = 905139706.

The previous prime is 905139659. The next prime is 905139713. The reversal of 905139707 is 707931509.

It is a strong prime.

It is an emirp because it is prime and its reverse (707931509) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 905139707 - 2¹⁰ = 905138683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (905139787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452569853 + 452569854.

It is an arithmetic number, because the mean of its divisors is an integer number (452569854).

Almost surely, 2^905139707 is an apocalyptic number.

905139707 is a deficient number, since it is larger than the sum of its proper divisors (1).

905139707 is an equidigital number, since it uses as much as digits as its factorization.

905139707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59535, while the sum is 41.

The square root of 905139707 is about 30085.5398322849. The cubic root of 905139707 is about 967.3237979880.

The spelling of 905139707 in words is "nine hundred five million, one hundred thirty-nine thousand, seven hundred seven".