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994203961 = 315312

994203961 has 3 divisors (see below), whose sum is σ = 994235493. Its totient is φ = 994172430.

The previous prime is 994203943. The next prime is 994203971. The reversal of 994203961 is 169302499.

The square root of 994203961 is 31531.

It is a perfect power (a square), and thus also a powerful number.

994203961 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, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 994203961 - 25 = 994203929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994203901) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15766 + ... + 47296.

It is an arithmetic number, because the mean of its divisors is an integer number (331411831).

Almost surely, 2994203961 is an apocalyptic number.

994203961 is the 31531-st square number.

994203961 is the 15766-th centered octagonal number.

It is an amenable number.

994203961 is a deficient number, since it is larger than the sum of its proper divisors (31532).

994203961 is an frugal number, since it uses more digits than its factorization.

994203961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63062 (or 31531 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 43.

The cubic root of 994203961 is about 998.0642422598.

Multiplying 994203961 by its product of nonzero digits (104976), we get a square (104367555009936 = 102160442).

The spelling of 994203961 in words is "nine hundred ninety-four million, two hundred three thousand, nine hundred sixty-one".

Divisors: 1 31531 994203961