858492649 has 8 divisors (see below), whose sum is σ = 988625088. Its totient is φ = 730232880.

The previous prime is 858492631. The next prime is 858492653. The reversal of 858492649 is 946294858.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 858492649 - 2⁷ = 858492521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 858492649.

It is not an unprimeable number, because it can be changed into a prime (858492659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467182 + ... + 469015.

It is an arithmetic number, because the mean of its divisors is an integer number (123578136).

Almost surely, 2^858492649 is an apocalyptic number.

It is an amenable number.

858492649 is a deficient number, since it is larger than the sum of its proper divisors (130132439).

858492649 is a wasteful number, since it uses less digits than its factorization.

858492649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936335.

The product of its digits is 4976640, while the sum is 55.

The square root of 858492649 is about 29300.0452047433. The cubic root of 858492649 is about 950.4126181742.

The spelling of 858492649 in words is "eight hundred fifty-eight million, four hundred ninety-two thousand, six hundred forty-nine".