994479777740 has 24 divisors (see below), whose sum is σ = 2089162404672. Its totient is φ = 397648126080.

The previous prime is 994479777679. The next prime is 994479777749. The reversal of 994479777740 is 47777974499.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (994479777749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8929841 + ... + 9040520.

It is an arithmetic number, because the mean of its divisors is an integer number (87048433528).

Almost surely, 2^994479777740 is an apocalyptic number.

It is an amenable number.

994479777740 is an abundant number, since it is smaller than the sum of its proper divisors (1094682626932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

994479777740 is a wasteful number, since it uses less digits than its factorization.

994479777740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17973137 (or 17973135 counting only the distinct ones).

The product of its (nonzero) digits is 784147392, while the sum is 74.

The spelling of 994479777740 in words is "nine hundred ninety-four billion, four hundred seventy-nine million, seven hundred seventy-seven thousand, seven hundred forty".