29087389 has 2 divisors, whose sum is σ = 29087390. Its totient is φ = 29087388.

The previous prime is 29087381. The next prime is 29087417. The reversal of 29087389 is 98378092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27352900 + 1734489 = 5230^2 + 1317^2 .

It is a cyclic number.

It is not a de Polignac number, because 29087389 - 2³ = 29087381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29087381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14543694 + 14543695.

It is an arithmetic number, because the mean of its divisors is an integer number (14543695).

Almost surely, 2^29087389 is an apocalyptic number.

It is an amenable number.

29087389 is a deficient number, since it is larger than the sum of its proper divisors (1).

29087389 is an equidigital number, since it uses as much as digits as its factorization.

29087389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 29087389 is about 5393.2725686729. The cubic root of 29087389 is about 307.5399784979.

The spelling of 29087389 in words is "twenty-nine million, eighty-seven thousand, three hundred eighty-nine".