29039987 has 2 divisors, whose sum is σ = 29039988. Its totient is φ = 29039986.

The previous prime is 29039981. The next prime is 29040001. The reversal of 29039987 is 78993092.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29039987 - 2⁴ = 29039971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (29039981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14519993 + 14519994.

It is an arithmetic number, because the mean of its divisors is an integer number (14519994).

Almost surely, 2^29039987 is an apocalyptic number.

29039987 is a deficient number, since it is larger than the sum of its proper divisors (1).

29039987 is an equidigital number, since it uses as much as digits as its factorization.

29039987 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 29039987 is about 5388.8762279347. The cubic root of 29039987 is about 307.3728277530.

The spelling of 29039987 in words is "twenty-nine million, thirty-nine thousand, nine hundred eighty-seven".