29531039 has 4 divisors (see below), whose sum is σ = 29584056. Its totient is φ = 29478024.

The previous prime is 29531009. The next prime is 29531041. The reversal of 29531039 is 93013592.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29531039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29530996 and 29531014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29531009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25664 + ... + 26789.

It is an arithmetic number, because the mean of its divisors is an integer number (7396014).

Almost surely, 2^29531039 is an apocalyptic number.

29531039 is a deficient number, since it is larger than the sum of its proper divisors (53017).

29531039 is an equidigital number, since it uses as much as digits as its factorization.

29531039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53016.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 29531039 is about 5434.2468659420. The cubic root of 29531039 is about 309.0956613220.

The spelling of 29531039 in words is "twenty-nine million, five hundred thirty-one thousand, thirty-nine".