129488765 has 8 divisors (see below), whose sum is σ = 177584640. Its totient is φ = 88792272.

The previous prime is 129488759. The next prime is 129488771. The reversal of 129488765 is 567884921.

It is an interprime number because it is at equal distance from previous prime (129488759) and next prime (129488771).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129488765 - 2¹⁴ = 129472381 is a prime.

It is a super-2 number, since 2×129488765² = 33534680522450450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1849805 + ... + 1849874.

It is an arithmetic number, because the mean of its divisors is an integer number (22198080).

Almost surely, 2^129488765 is an apocalyptic number.

It is an amenable number.

129488765 is a deficient number, since it is larger than the sum of its proper divisors (48095875).

129488765 is an equidigital number, since it uses as much as digits as its factorization.

129488765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699691.

The product of its digits is 967680, while the sum is 50.

The square root of 129488765 is about 11379.3130284741. The cubic root of 129488765 is about 505.9147749729.

The spelling of 129488765 in words is "one hundred twenty-nine million, four hundred eighty-eight thousand, seven hundred sixty-five".