10129439 has 4 divisors (see below), whose sum is σ = 10478760. Its totient is φ = 9780120.

The previous prime is 10129429. The next prime is 10129447. The reversal of 10129439 is 93492101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10129439 - 2⁸ = 10129183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 349291 = 10129439 / (1 + 0 + 1 + 2 + 9 + 4 + 3 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10129429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174617 + ... + 174674.

It is an arithmetic number, because the mean of its divisors is an integer number (2619690).

Almost surely, 2^10129439 is an apocalyptic number.

10129439 is a deficient number, since it is larger than the sum of its proper divisors (349321).

10129439 is an equidigital number, since it uses as much as digits as its factorization.

10129439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349320.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 10129439 is about 3182.6779604603. The cubic root of 10129439 is about 216.3690464620.

The spelling of 10129439 in words is "ten million, one hundred twenty-nine thousand, four hundred thirty-nine".