948992861 has 4 divisors (see below), whose sum is σ = 949055772. Its totient is φ = 948929952.

The previous prime is 948992831. The next prime is 948992873. The reversal of 948992861 is 168299849.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 76912900 + 872079961 = 8770^2 + 29531^2 .

It is a cyclic number.

It is not a de Polignac number, because 948992861 - 2⁶ = 948992797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 948992797 and 948992806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (948992831) 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, 6191 + ... + 44003.

It is an arithmetic number, because the mean of its divisors is an integer number (237263943).

Almost surely, 2^948992861 is an apocalyptic number.

It is an amenable number.

948992861 is a deficient number, since it is larger than the sum of its proper divisors (62911).

948992861 is a wasteful number, since it uses less digits than its factorization.

948992861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62910.

The product of its digits is 2239488, while the sum is 56.

The square root of 948992861 is about 30805.7277304075. The cubic root of 948992861 is about 982.7000582366.

The spelling of 948992861 in words is "nine hundred forty-eight million, nine hundred ninety-two thousand, eight hundred sixty-one".