129367387 has 8 divisors (see below), whose sum is σ = 136256256. Its totient is φ = 122583912.

The previous prime is 129367373. The next prime is 129367391. The reversal of 129367387 is 783763921.

It is a happy number.

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 129367387 - 2¹¹ = 129365339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129367307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23823 + ... + 28744.

It is an arithmetic number, because the mean of its divisors is an integer number (17032032).

Almost surely, 2^129367387 is an apocalyptic number.

129367387 is a deficient number, since it is larger than the sum of its proper divisors (6888869).

129367387 is a wasteful number, since it uses less digits than its factorization.

129367387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52697.

The product of its digits is 381024, while the sum is 46.

The square root of 129367387 is about 11373.9785035844. The cubic root of 129367387 is about 505.7566502625.

The spelling of 129367387 in words is "one hundred twenty-nine million, three hundred sixty-seven thousand, three hundred eighty-seven".