134400709 has 4 divisors (see below), whose sum is σ = 134825004. Its totient is φ = 133976416.

The previous prime is 134400701. The next prime is 134400719. The reversal of 134400709 is 907004431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 907004431 = 2539 ⋅357229.

It can be written as a sum of positive squares in 2 ways, for example, as 39727809 + 94672900 = 6303^2 + 9730^2 .

It is a cyclic number.

It is not a de Polignac number, because 134400709 - 2³ = 134400701 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 (134400701) 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, 211672 + ... + 212305.

It is an arithmetic number, because the mean of its divisors is an integer number (33706251).

Almost surely, 2^134400709 is an apocalyptic number.

It is an amenable number.

134400709 is a deficient number, since it is larger than the sum of its proper divisors (424295).

134400709 is an equidigital number, since it uses as much as digits as its factorization.

134400709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424294.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 134400709 is about 11593.1319754413. The cubic root of 134400709 is about 512.2325667182.

The spelling of 134400709 in words is "one hundred thirty-four million, four hundred thousand, seven hundred nine".