9779470249 has 2 divisors, whose sum is σ = 9779470250. Its totient is φ = 9779470248.

The previous prime is 9779470243. The next prime is 9779470301. The reversal of 9779470249 is 9420749779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8993677225 + 785793024 = 94835^2 + 28032^2 .

It is a cyclic number.

It is not a de Polignac number, because 9779470249 - 2⁷ = 9779470121 is a prime.

It is a super-2 number, since 2×9779470249² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9779470193 and 9779470202.

It is not a weakly prime, because it can be changed into another prime (9779470243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4889735124 + 4889735125.

It is an arithmetic number, because the mean of its divisors is an integer number (4889735125).

Almost surely, 2^9779470249 is an apocalyptic number.

It is an amenable number.

9779470249 is a deficient number, since it is larger than the sum of its proper divisors (1).

9779470249 is an equidigital number, since it uses as much as digits as its factorization.

9779470249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8001504, while the sum is 58.

The square root of 9779470249 is about 98891.2041032973. The cubic root of 9779470249 is about 2138.4795915053.

The spelling of 9779470249 in words is "nine billion, seven hundred seventy-nine million, four hundred seventy thousand, two hundred forty-nine".