129465691 has 2 divisors, whose sum is σ = 129465692. Its totient is φ = 129465690.

The previous prime is 129465673. The next prime is 129465709. The reversal of 129465691 is 196564921.

It is a balanced prime because it is at equal distance from previous prime (129465673) and next prime (129465709).

It is a cyclic number.

It is not a de Polignac number, because 129465691 - 2¹¹ = 129463643 is a prime.

It is a super-2 number, since 2×129465691² = 33522730292214962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (129465671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64732845 + 64732846.

It is an arithmetic number, because the mean of its divisors is an integer number (64732846).

Almost surely, 2^129465691 is an apocalyptic number.

129465691 is a deficient number, since it is larger than the sum of its proper divisors (1).

129465691 is an equidigital number, since it uses as much as digits as its factorization.

129465691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 43.

The square root of 129465691 is about 11378.2991259678. The cubic root of 129465691 is about 505.8847230196.

The spelling of 129465691 in words is "one hundred twenty-nine million, four hundred sixty-five thousand, six hundred ninety-one".