858472319 has 2 divisors, whose sum is σ = 858472320. Its totient is φ = 858472318.

The previous prime is 858472313. The next prime is 858472379. The reversal of 858472319 is 913274858.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 858472319 - 2²⁴ = 841695103 is a prime.

It is a super-2 number, since 2×858472319² = 1473949444978475522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858472313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429236159 + 429236160.

It is an arithmetic number, because the mean of its divisors is an integer number (429236160).

Almost surely, 2^858472319 is an apocalyptic number.

858472319 is a deficient number, since it is larger than the sum of its proper divisors (1).

858472319 is an equidigital number, since it uses as much as digits as its factorization.

858472319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 47.

The square root of 858472319 is about 29299.6982748970. The cubic root of 858472319 is about 950.4051158614.

The spelling of 858472319 in words is "eight hundred fifty-eight million, four hundred seventy-two thousand, three hundred nineteen".