134378999 has 8 divisors (see below), whose sum is σ = 145593360. Its totient is φ = 123532416.

The previous prime is 134378987. The next prime is 134379013. The reversal of 134378999 is 999873431.

It is a happy number.

134378999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 134378999 - 2⁴ = 134378983 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 134378999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134378939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91184 + ... + 92645.

It is an arithmetic number, because the mean of its divisors is an integer number (18199170).

Almost surely, 2^134378999 is an apocalyptic number.

134378999 is a deficient number, since it is larger than the sum of its proper divisors (11214361).

134378999 is a wasteful number, since it uses less digits than its factorization.

134378999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183889.

The product of its digits is 1469664, while the sum is 53.

The square root of 134378999 is about 11592.1956073903. The cubic root of 134378999 is about 512.2049846022.

The spelling of 134378999 in words is "one hundred thirty-four million, three hundred seventy-eight thousand, nine hundred ninety-nine".