134403905 has 4 divisors (see below), whose sum is σ = 161284692. Its totient is φ = 107523120.

The previous prime is 134403889. The next prime is 134403949. The reversal of 134403905 is 509304431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32171584 + 102232321 = 5672^2 + 10111^2 .

It is not a de Polignac number, because 134403905 - 2⁴ = 134403889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13440386 + ... + 13440395.

It is an arithmetic number, because the mean of its divisors is an integer number (40321173).

Almost surely, 2^134403905 is an apocalyptic number.

It is an amenable number.

134403905 is a deficient number, since it is larger than the sum of its proper divisors (26880787).

134403905 is an equidigital number, since it uses as much as digits as its factorization.

134403905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26880786.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 134403905 is about 11593.2698148538. The cubic root of 134403905 is about 512.2366269208.

The spelling of 134403905 in words is "one hundred thirty-four million, four hundred three thousand, nine hundred five".