134883821 has 4 divisors (see below), whose sum is σ = 139234944. Its totient is φ = 130532700.

The previous prime is 134883811. The next prime is 134883841. The reversal of 134883821 is 128388431.

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: 128388431 = 167 ⋅768793.

It is a cyclic number.

It is not a de Polignac number, because 134883821 - 2¹⁴ = 134867437 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 (134883811) 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, 2175515 + ... + 2175576.

It is an arithmetic number, because the mean of its divisors is an integer number (34808736).

Almost surely, 2^134883821 is an apocalyptic number.

It is an amenable number.

134883821 is a deficient number, since it is larger than the sum of its proper divisors (4351123).

134883821 is an equidigital number, since it uses as much as digits as its factorization.

134883821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351122.

The product of its digits is 36864, while the sum is 38.

The square root of 134883821 is about 11613.9494143896. The cubic root of 134883821 is about 512.8455837721.

The spelling of 134883821 in words is "one hundred thirty-four million, eight hundred eighty-three thousand, eight hundred twenty-one".