29875381 has 2 divisors, whose sum is σ = 29875382. Its totient is φ = 29875380.

The previous prime is 29875379. The next prime is 29875397. The reversal of 29875381 is 18357892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27394756 + 2480625 = 5234^2 + 1575^2 .

It is a cyclic number.

It is not a de Polignac number, because 29875381 - 2¹ = 29875379 is a prime.

It is a super-2 number, since 2×29875381² = 1785076779790322, which contains 22 as substring.

Together with 29875379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29875331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14937690 + 14937691.

It is an arithmetic number, because the mean of its divisors is an integer number (14937691).

Almost surely, 2^29875381 is an apocalyptic number.

It is an amenable number.

29875381 is a deficient number, since it is larger than the sum of its proper divisors (1).

29875381 is an equidigital number, since it uses as much as digits as its factorization.

29875381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 43.

The square root of 29875381 is about 5465.8376302265. The cubic root of 29875381 is about 310.2924088009.

The spelling of 29875381 in words is "twenty-nine million, eight hundred seventy-five thousand, three hundred eighty-one".