69349381 has 2 divisors, whose sum is σ = 69349382. Its totient is φ = 69349380.

The previous prime is 69349369. The next prime is 69349403. The reversal of 69349381 is 18394396.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43441281 + 25908100 = 6591^2 + 5090^2 .

It is a cyclic number.

It is not a de Polignac number, because 69349381 - 2⁵ = 69349349 is a prime.

It is a super-2 number, since 2×69349381² = 9618673290166322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69349351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34674690 + 34674691.

It is an arithmetic number, because the mean of its divisors is an integer number (34674691).

Almost surely, 2^69349381 is an apocalyptic number.

It is an amenable number.

69349381 is a deficient number, since it is larger than the sum of its proper divisors (1).

69349381 is an equidigital number, since it uses as much as digits as its factorization.

69349381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 43.

The square root of 69349381 is about 8327.6275733248. The cubic root of 69349381 is about 410.8477027817.

The spelling of 69349381 in words is "sixty-nine million, three hundred forty-nine thousand, three hundred eighty-one".