129415069 has 4 divisors (see below), whose sum is σ = 147902944. Its totient is φ = 110927196.

The previous prime is 129415063. The next prime is 129415087. The reversal of 129415069 is 960514921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 129415069 - 2⁷ = 129414941 is a prime.

It is a super-2 number, since 2×129415069² = 33496520168549522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129415063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9243927 + ... + 9243940.

It is an arithmetic number, because the mean of its divisors is an integer number (36975736).

Almost surely, 2^129415069 is an apocalyptic number.

It is an amenable number.

129415069 is a deficient number, since it is larger than the sum of its proper divisors (18487875).

129415069 is an equidigital number, since it uses as much as digits as its factorization.

129415069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18487874.

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

The square root of 129415069 is about 11376.0744107974. The cubic root of 129415069 is about 505.8187795903.

The spelling of 129415069 in words is "one hundred twenty-nine million, four hundred fifteen thousand, sixty-nine".