134249389 has 4 divisors (see below), whose sum is σ = 134841024. Its totient is φ = 133657756.

The previous prime is 134249387. The next prime is 134249399. The reversal of 134249389 is 983942431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 983942431 = 17837 ⋅55163.

It is a cyclic number.

It is not a de Polignac number, because 134249389 - 2¹ = 134249387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134249387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295477 + ... + 295930.

It is an arithmetic number, because the mean of its divisors is an integer number (33710256).

Almost surely, 2^134249389 is an apocalyptic number.

It is an amenable number.

134249389 is a deficient number, since it is larger than the sum of its proper divisors (591635).

134249389 is an equidigital number, since it uses as much as digits as its factorization.

134249389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591634.

The product of its digits is 186624, while the sum is 43.

The square root of 134249389 is about 11586.6038596303. The cubic root of 134249389 is about 512.0402558782.

The spelling of 134249389 in words is "one hundred thirty-four million, two hundred forty-nine thousand, three hundred eighty-nine".