9772439129 has 2 divisors, whose sum is σ = 9772439130. Its totient is φ = 9772439128.

The previous prime is 9772439113. The next prime is 9772439141. The reversal of 9772439129 is 9219342779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9666822400 + 105616729 = 98320^2 + 10277^2 .

It is a cyclic number.

It is not a de Polignac number, because 9772439129 - 2⁴ = 9772439113 is a prime.

It is not a weakly prime, because it can be changed into another prime (9772439189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4886219564 + 4886219565.

It is an arithmetic number, because the mean of its divisors is an integer number (4886219565).

Almost surely, 2^9772439129 is an apocalyptic number.

It is an amenable number.

9772439129 is a deficient number, since it is larger than the sum of its proper divisors (1).

9772439129 is an equidigital number, since it uses as much as digits as its factorization.

9772439129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 53.

The square root of 9772439129 is about 98855.6479367770. The cubic root of 9772439129 is about 2137.9669696173.

The spelling of 9772439129 in words is "nine billion, seven hundred seventy-two million, four hundred thirty-nine thousand, one hundred twenty-nine".