994054861 has 4 divisors (see below), whose sum is σ = 994137052. Its totient is φ = 993972672.

The previous prime is 994054847. The next prime is 994054877. The reversal of 994054861 is 168450499.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 168450499 = 7 ⋅24064357.

It can be written as a sum of positive squares in 2 ways, for example, as 410832361 + 583222500 = 20269^2 + 24150^2 .

It is a cyclic number.

It is not a de Polignac number, because 994054861 - 2²¹ = 991957709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994054891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18990 + ... + 48463.

It is an arithmetic number, because the mean of its divisors is an integer number (248534263).

Almost surely, 2^994054861 is an apocalyptic number.

It is an amenable number.

994054861 is a deficient number, since it is larger than the sum of its proper divisors (82191).

994054861 is a wasteful number, since it uses less digits than its factorization.

994054861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82190.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 994054861 is about 31528.6355714928. The cubic root of 994054861 is about 998.0143467910.

The spelling of 994054861 in words is "nine hundred ninety-four million, fifty-four thousand, eight hundred sixty-one".