29391039 has 16 divisors (see below), whose sum is σ = 43718400. Its totient is φ = 19514808.

The previous prime is 29391023. The next prime is 29391049. The reversal of 29391039 is 93019392.

It is not a de Polignac number, because 29391039 - 2⁴ = 29391023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29390994 and 29391012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29391049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5032 + ... + 9170.

It is an arithmetic number, because the mean of its divisors is an integer number (2732400).

Almost surely, 2^29391039 is an apocalyptic number.

29391039 is a deficient number, since it is larger than the sum of its proper divisors (14327361).

29391039 is a wasteful number, since it uses less digits than its factorization.

29391039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411 (or 4405 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 29391039 is about 5421.3502930543. The cubic root of 29391039 is about 308.6064364492.

The spelling of 29391039 in words is "twenty-nine million, three hundred ninety-one thousand, thirty-nine".