29028991 has 2 divisors, whose sum is σ = 29028992. Its totient is φ = 29028990.

The previous prime is 29028959. The next prime is 29028997. The reversal of 29028991 is 19982092.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29028991 - 2⁵ = 29028959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29028997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14514495 + 14514496.

It is an arithmetic number, because the mean of its divisors is an integer number (14514496).

Almost surely, 2^29028991 is an apocalyptic number.

29028991 is a deficient number, since it is larger than the sum of its proper divisors (1).

29028991 is an equidigital number, since it uses as much as digits as its factorization.

29028991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 29028991 is about 5387.8558815172. The cubic root of 29028991 is about 307.3340272501.

The spelling of 29028991 in words is "twenty-nine million, twenty-eight thousand, nine hundred ninety-one".