29391129 has 6 divisors (see below), whose sum is σ = 42453866. Its totient is φ = 19594080.

The previous prime is 29391127. The next prime is 29391139. The reversal of 29391129 is 92119392.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24206400 + 5184729 = 4920^2 + 2277^2 .

It is not a de Polignac number, because 29391129 - 2¹ = 29391127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29391093 and 29391102.

It is not an unprimeable number, because it can be changed into a prime (29391127) 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 5 ways as a sum of consecutive naturals, for example, 1632832 + ... + 1632849.

Almost surely, 2^29391129 is an apocalyptic number.

It is an amenable number.

29391129 is a deficient number, since it is larger than the sum of its proper divisors (13062737).

29391129 is a wasteful number, since it uses less digits than its factorization.

29391129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265687 (or 3265684 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 29391129 is about 5421.3585935631. The cubic root of 29391129 is about 308.6067514494.

The spelling of 29391129 in words is "twenty-nine million, three hundred ninety-one thousand, one hundred twenty-nine".