784475679149 has 2 divisors, whose sum is σ = 784475679150. Its totient is φ = 784475679148.

The previous prime is 784475679137. The next prime is 784475679161. The reversal of 784475679149 is 941976574487.

It is a balanced prime because it is at equal distance from previous prime (784475679137) and next prime (784475679161).

It can be written as a sum of positive squares in only one way, i.e., 679376523049 + 105099156100 = 824243^2 + 324190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-784475679149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (784475609149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392237839574 + 392237839575.

It is an arithmetic number, because the mean of its divisors is an integer number (392237839575).

Almost surely, 2^784475679149 is an apocalyptic number.

It is an amenable number.

784475679149 is a deficient number, since it is larger than the sum of its proper divisors (1).

784475679149 is an equidigital number, since it uses as much as digits as its factorization.

784475679149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 426746880, while the sum is 71.

The spelling of 784475679149 in words is "seven hundred eighty-four billion, four hundred seventy-five million, six hundred seventy-nine thousand, one hundred forty-nine".