994314105409 has 3 divisors (see below), whose sum is σ = 994315102563. Its totient is φ = 994313108256.

The previous prime is 994314105371. The next prime is 994314105467. The reversal of 994314105409 is 904501413499.

The square root of 994314105409 is 997153.

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

It can be written as a sum of positive squares in only one way, i.e., 17917161025 + 976396944384 = 133855^2 + 988128^2 .

It is not a de Polignac number, because 994314105409 - 2¹⁷ = 994313974337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994314102409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 498577 + ... + 1495729.

It is an arithmetic number, because the mean of its divisors is an integer number (331438367521).

Almost surely, 2^994314105409 is an apocalyptic number.

994314105409 is the 997153-rd square number.

994314105409 is the 498577-th centered octagonal number.

It is an amenable number.

994314105409 is a deficient number, since it is larger than the sum of its proper divisors (997154).

994314105409 is an frugal number, since it uses more digits than its factorization.

994314105409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994306 (or 997153 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 49.

Multiplying 994314105409 by its sum of digits (49), we get a square (48721391165041 = 6980071²).

The spelling of 994314105409 in words is "nine hundred ninety-four billion, three hundred fourteen million, one hundred five thousand, four hundred nine".