29130869 has 8 divisors (see below), whose sum is σ = 30253272. Its totient is φ = 28028160.

The previous prime is 29130853. The next prime is 29130887. The reversal of 29130869 is 96803192.

It can be written as a sum of positive squares in 4 ways, for example, as 3496900 + 25633969 = 1870^2 + 5063^2 .

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 29130869 - 2⁴ = 29130853 is a prime.

It is a super-2 number, since 2×29130869² = 1697215057390322, 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 (29130889) 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, 1874 + ... + 7859.

It is an arithmetic number, because the mean of its divisors is an integer number (3781659).

Almost surely, 2^29130869 is an apocalyptic number.

It is an amenable number.

29130869 is a deficient number, since it is larger than the sum of its proper divisors (1122403).

29130869 is an equidigital number, since it uses as much as digits as its factorization.

29130869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9847.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 29130869 is about 5397.3020111904. The cubic root of 29130869 is about 307.6931397301.

The spelling of 29130869 in words is "twenty-nine million, one hundred thirty thousand, eight hundred sixty-nine".