994312779 has 32 divisors (see below), whose sum is σ = 1456291584. Its totient is φ = 600929280.

The previous prime is 994312751. The next prime is 994312819. The reversal of 994312779 is 977213499.

It is not a de Polignac number, because 994312779 - 2⁸ = 994312523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (994312679) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156984 + ... + 163194.

It is an arithmetic number, because the mean of its divisors is an integer number (45509112).

Almost surely, 2^994312779 is an apocalyptic number.

994312779 is a deficient number, since it is larger than the sum of its proper divisors (461978805).

994312779 is a wasteful number, since it uses less digits than its factorization.

994312779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6347.

The product of its digits is 857304, while the sum is 51.

The square root of 994312779 is about 31532.7255244452. The cubic root of 994312779 is about 998.1006544371.

It can be divided in two parts, 9943 and 12779, that added together give a palindrome (22722).

The spelling of 994312779 in words is "nine hundred ninety-four million, three hundred twelve thousand, seven hundred seventy-nine".