8158963 has 4 divisors (see below), whose sum is σ = 8638920. Its totient is φ = 7679008.

The previous prime is 8158919. The next prime is 8158967. The reversal of 8158963 is 3698518.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3698518 = 2 ⋅1849259.

It is a cyclic number.

It is not a de Polignac number, because 8158963 - 2¹³ = 8150771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8158967) 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 3 ways as a sum of consecutive naturals, for example, 239953 + ... + 239986.

It is an arithmetic number, because the mean of its divisors is an integer number (2159730).

Almost surely, 2^8158963 is an apocalyptic number.

8158963 is a deficient number, since it is larger than the sum of its proper divisors (479957).

8158963 is a wasteful number, since it uses less digits than its factorization.

8158963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479956.

The product of its digits is 51840, while the sum is 40.

The square root of 8158963 is about 2856.3898543441. The cubic root of 8158963 is about 201.3160132194.

The spelling of 8158963 in words is "eight million, one hundred fifty-eight thousand, nine hundred sixty-three".