134621869 has 2 divisors, whose sum is σ = 134621870. Its totient is φ = 134621868.

The previous prime is 134621831. The next prime is 134621881. The reversal of 134621869 is 968126431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132020100 + 2601769 = 11490^2 + 1613^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134621869 is a prime.

It is a super-2 number, since 2×134621869² = 36246095226106322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134622869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67310934 + 67310935.

It is an arithmetic number, because the mean of its divisors is an integer number (67310935).

Almost surely, 2^134621869 is an apocalyptic number.

It is an amenable number.

134621869 is a deficient number, since it is larger than the sum of its proper divisors (1).

134621869 is an equidigital number, since it uses as much as digits as its factorization.

134621869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 134621869 is about 11602.6664607753. Note that the first 3 decimals coincide. The cubic root of 134621869 is about 512.5133769263.

The spelling of 134621869 in words is "one hundred thirty-four million, six hundred twenty-one thousand, eight hundred sixty-nine".