994794797809 has 4 divisors (see below), whose sum is σ = 995709973504. Its totient is φ = 993879622116.

The previous prime is 994794797771. The next prime is 994794797891. The reversal of 994794797809 is 908797497499.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 908797497499 = 37 ⋅24562094527.

It is a cyclic number.

It is not a de Polignac number, because 994794797809 - 2³¹ = 992647314161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (991794797809) 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, 457586217 + ... + 457588390.

It is an arithmetic number, because the mean of its divisors is an integer number (248927493376).

Almost surely, 2^994794797809 is an apocalyptic number.

It is an amenable number.

994794797809 is a deficient number, since it is larger than the sum of its proper divisors (915175695).

994794797809 is a wasteful number, since it uses less digits than its factorization.

994794797809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915175694.

The product of its (nonzero) digits is 2592487296, while the sum is 82.

The spelling of 994794797809 in words is "nine hundred ninety-four billion, seven hundred ninety-four million, seven hundred ninety-seven thousand, eight hundred nine".