29039891 has 2 divisors, whose sum is σ = 29039892. Its totient is φ = 29039890.

The previous prime is 29039873. The next prime is 29039897. The reversal of 29039891 is 19893092.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29039891 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (29039897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14519945 + 14519946.

It is an arithmetic number, because the mean of its divisors is an integer number (14519946).

Almost surely, 2^29039891 is an apocalyptic number.

29039891 is a deficient number, since it is larger than the sum of its proper divisors (1).

29039891 is an equidigital number, since it uses as much as digits as its factorization.

29039891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 29039891 is about 5388.8673206899. The cubic root of 29039891 is about 307.3724890497.

The spelling of 29039891 in words is "twenty-nine million, thirty-nine thousand, eight hundred ninety-one".