858149963 has 4 divisors (see below), whose sum is σ = 936163608. Its totient is φ = 780136320.

The previous prime is 858149947. The next prime is 858149983. The reversal of 858149963 is 369941858.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 858149963 - 2⁴ = 858149947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (858149983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39006806 + ... + 39006827.

It is an arithmetic number, because the mean of its divisors is an integer number (234040902).

Almost surely, 2^858149963 is an apocalyptic number.

858149963 is a deficient number, since it is larger than the sum of its proper divisors (78013645).

858149963 is a wasteful number, since it uses less digits than its factorization.

858149963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78013644.

The product of its digits is 1866240, while the sum is 53.

The square root of 858149963 is about 29294.1967461134. The cubic root of 858149963 is about 950.2861420596.

The spelling of 858149963 in words is "eight hundred fifty-eight million, one hundred forty-nine thousand, nine hundred sixty-three".