29939807 has 2 divisors, whose sum is σ = 29939808. Its totient is φ = 29939806.

The previous prime is 29939783. The next prime is 29939849. The reversal of 29939807 is 70893992.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29939807 - 2⁸ = 29939551 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29939857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14969903 + 14969904.

It is an arithmetic number, because the mean of its divisors is an integer number (14969904).

Almost surely, 2^29939807 is an apocalyptic number.

29939807 is a deficient number, since it is larger than the sum of its proper divisors (1).

29939807 is an equidigital number, since it uses as much as digits as its factorization.

29939807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 29939807 is about 5471.7279720395. The cubic root of 29939807 is about 310.5152962887.

The spelling of 29939807 in words is "twenty-nine million, nine hundred thirty-nine thousand, eight hundred seven".