129773953 has 2 divisors, whose sum is σ = 129773954. Its totient is φ = 129773952.

The previous prime is 129773879. The next prime is 129773989. The reversal of 129773953 is 359377921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109998144 + 19775809 = 10488^2 + 4447^2 .

It is a cyclic number.

It is not a de Polignac number, because 129773953 - 2¹³ = 129765761 is a prime.

It is not a weakly prime, because it can be changed into another prime (129773993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64886976 + 64886977.

It is an arithmetic number, because the mean of its divisors is an integer number (64886977).

Almost surely, 2^129773953 is an apocalyptic number.

It is an amenable number.

129773953 is a deficient number, since it is larger than the sum of its proper divisors (1).

129773953 is an equidigital number, since it uses as much as digits as its factorization.

129773953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 357210, while the sum is 46.

The square root of 129773953 is about 11391.8371213777. The cubic root of 129773953 is about 506.2859140705.

The spelling of 129773953 in words is "one hundred twenty-nine million, seven hundred seventy-three thousand, nine hundred fifty-three".