134881393 has 2 divisors, whose sum is σ = 134881394. Its totient is φ = 134881392.

The previous prime is 134881387. The next prime is 134881427. The reversal of 134881393 is 393188431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134838544 + 42849 = 11612^2 + 207^2 .

It is a cyclic number.

It is not a de Polignac number, because 134881393 - 2¹³ = 134873201 is a prime.

It is not a weakly prime, because it can be changed into another prime (134881303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67440696 + 67440697.

It is an arithmetic number, because the mean of its divisors is an integer number (67440697).

Almost surely, 2^134881393 is an apocalyptic number.

It is an amenable number.

134881393 is a deficient number, since it is larger than the sum of its proper divisors (1).

134881393 is an equidigital number, since it uses as much as digits as its factorization.

134881393 is an evil number, because the sum of its binary digits is even.

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

The square root of 134881393 is about 11613.8448844472. The cubic root of 134881393 is about 512.8425065646.

The spelling of 134881393 in words is "one hundred thirty-four million, eight hundred eighty-one thousand, three hundred ninety-three".