129051469 has 2 divisors, whose sum is σ = 129051470. Its totient is φ = 129051468.

The previous prime is 129051463. The next prime is 129051487. The reversal of 129051469 is 964150921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121815369 + 7236100 = 11037^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 129051469 - 2⁷ = 129051341 is a prime.

It is a super-2 number, since 2×129051469² = 33308563302115922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129051463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64525734 + 64525735.

It is an arithmetic number, because the mean of its divisors is an integer number (64525735).

Almost surely, 2^129051469 is an apocalyptic number.

It is an amenable number.

129051469 is a deficient number, since it is larger than the sum of its proper divisors (1).

129051469 is an equidigital number, since it uses as much as digits as its factorization.

129051469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 129051469 is about 11360.0822620261. The cubic root of 129051469 is about 505.3446250732.

The spelling of 129051469 in words is "one hundred twenty-nine million, fifty-one thousand, four hundred sixty-nine".