29086381 has 2 divisors, whose sum is σ = 29086382. Its totient is φ = 29086380.

The previous prime is 29086367. The next prime is 29086399. The reversal of 29086381 is 18368092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24502500 + 4583881 = 4950^2 + 2141^2 .

It is a cyclic number.

It is not a de Polignac number, because 29086381 - 2¹⁷ = 28955309 is a prime.

It is a super-2 number, since 2×29086381² = 1692035119354322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29086381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29086331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14543190 + 14543191.

It is an arithmetic number, because the mean of its divisors is an integer number (14543191).

Almost surely, 2^29086381 is an apocalyptic number.

It is an amenable number.

29086381 is a deficient number, since it is larger than the sum of its proper divisors (1).

29086381 is an equidigital number, since it uses as much as digits as its factorization.

29086381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 29086381 is about 5393.1791181084. The cubic root of 29086381 is about 307.5364259402.

The spelling of 29086381 in words is "twenty-nine million, eighty-six thousand, three hundred eighty-one".