134891249 has 2 divisors, whose sum is σ = 134891250. Its totient is φ = 134891248.

The previous prime is 134891231. The next prime is 134891291. The reversal of 134891249 is 942198431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128414224 + 6477025 = 11332^2 + 2545^2 .

It is an emirp because it is prime and its reverse (942198431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134891249 - 2¹² = 134887153 is a prime.

It is a super-3 number, since 3×134891249³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (134891149) 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, 67445624 + 67445625.

It is an arithmetic number, because the mean of its divisors is an integer number (67445625).

Almost surely, 2^134891249 is an apocalyptic number.

It is an amenable number.

134891249 is a deficient number, since it is larger than the sum of its proper divisors (1).

134891249 is an equidigital number, since it uses as much as digits as its factorization.

134891249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 41.

The square root of 134891249 is about 11614.2691978445. The cubic root of 134891249 is about 512.8549976688.

The spelling of 134891249 in words is "one hundred thirty-four million, eight hundred ninety-one thousand, two hundred forty-nine".