946808861 has 4 divisors (see below), whose sum is σ = 948259452. Its totient is φ = 945358272.

The previous prime is 946808839. The next prime is 946808887. The reversal of 946808861 is 168808649.

It is a happy number.

946808861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 166668100 + 780140761 = 12910^2 + 27931^2 .

It is a cyclic number.

It is not a de Polignac number, because 946808861 - 2²² = 942614557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (946808831) 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, 724316 + ... + 725621.

It is an arithmetic number, because the mean of its divisors is an integer number (237064863).

Almost surely, 2^946808861 is an apocalyptic number.

It is an amenable number.

946808861 is a deficient number, since it is larger than the sum of its proper divisors (1450591).

946808861 is a wasteful number, since it uses less digits than its factorization.

946808861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450590.

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 946808861 is about 30770.2593586729. The cubic root of 946808861 is about 981.9456214193.

The spelling of 946808861 in words is "nine hundred forty-six million, eight hundred eight thousand, eight hundred sixty-one".