134884821 has 4 divisors (see below), whose sum is σ = 179846432. Its totient is φ = 89923212.

The previous prime is 134884807. The next prime is 134884831. The reversal of 134884821 is 128488431.

It is a happy number.

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.

It is not a de Polignac number, because 134884821 - 2⁷ = 134884693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 134884821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134884831) 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, 22480801 + ... + 22480806.

It is an arithmetic number, because the mean of its divisors is an integer number (44961608).

Almost surely, 2^134884821 is an apocalyptic number.

It is an amenable number.

134884821 is a deficient number, since it is larger than the sum of its proper divisors (44961611).

134884821 is an equidigital number, since it uses as much as digits as its factorization.

134884821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44961610.

The product of its digits is 49152, while the sum is 39.

The square root of 134884821 is about 11613.9924659869. The cubic root of 134884821 is about 512.8468511451.

The spelling of 134884821 in words is "one hundred thirty-four million, eight hundred eighty-four thousand, eight hundred twenty-one".