839225407 has 2 divisors, whose sum is σ = 839225408. Its totient is φ = 839225406.

The previous prime is 839225389. The next prime is 839225441. The reversal of 839225407 is 704522938.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 839225407 - 2²⁷ = 705007679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 839225407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (839225477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419612703 + 419612704.

It is an arithmetic number, because the mean of its divisors is an integer number (419612704).

Almost surely, 2^839225407 is an apocalyptic number.

839225407 is a deficient number, since it is larger than the sum of its proper divisors (1).

839225407 is an equidigital number, since it uses as much as digits as its factorization.

839225407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 839225407 is about 28969.3874115419. The cubic root of 839225407 is about 943.2486836380.

The spelling of 839225407 in words is "eight hundred thirty-nine million, two hundred twenty-five thousand, four hundred seven".