858207479 has 2 divisors, whose sum is σ = 858207480. Its totient is φ = 858207478.

The previous prime is 858207463. The next prime is 858207529. The reversal of 858207479 is 974702858.

It is an a-pointer prime, because the next prime (858207529) can be obtained adding 858207479 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 858207479 - 2⁴ = 858207463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858207419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429103739 + 429103740.

It is an arithmetic number, because the mean of its divisors is an integer number (429103740).

Almost surely, 2^858207479 is an apocalyptic number.

858207479 is a deficient number, since it is larger than the sum of its proper divisors (1).

858207479 is an equidigital number, since it uses as much as digits as its factorization.

858207479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The square root of 858207479 is about 29295.1784258093. The cubic root of 858207479 is about 950.3073720074.

The spelling of 858207479 in words is "eight hundred fifty-eight million, two hundred seven thousand, four hundred seventy-nine".