129301669 has 16 divisors (see below), whose sum is σ = 155996800. Its totient is φ = 104696064.

The previous prime is 129301663. The next prime is 129301681. The reversal of 129301669 is 966103921.

It is a cyclic number.

It is not a de Polignac number, because 129301669 - 2¹³ = 129293477 is a prime.

It is a super-2 number, since 2×129301669² = 33437843212371122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129301663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53209 + ... + 55585.

It is an arithmetic number, because the mean of its divisors is an integer number (9749800).

Almost surely, 2^129301669 is an apocalyptic number.

129301669 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

129301669 is a deficient number, since it is larger than the sum of its proper divisors (26695131).

129301669 is a wasteful number, since it uses less digits than its factorization.

129301669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 129301669 is about 11371.0891738654. The cubic root of 129301669 is about 505.6709951217.

The spelling of 129301669 in words is "one hundred twenty-nine million, three hundred one thousand, six hundred sixty-nine".