134989905 has 8 divisors (see below), whose sum is σ = 215983872. Its totient is φ = 71994608.

The previous prime is 134989901. The next prime is 134989909. The reversal of 134989905 is 509989431.

It is an interprime number because it is at equal distance from previous prime (134989901) and next prime (134989909).

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 134989905 - 2² = 134989901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134989901) 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, 4499649 + ... + 4499678.

It is an arithmetic number, because the mean of its divisors is an integer number (26997984).

Almost surely, 2^134989905 is an apocalyptic number.

134989905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

134989905 is a deficient number, since it is larger than the sum of its proper divisors (80993967).

134989905 is an equidigital number, since it uses as much as digits as its factorization.

134989905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8999335.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 134989905 is about 11618.5156108687. The cubic root of 134989905 is about 512.9799968641.

The spelling of 134989905 in words is "one hundred thirty-four million, nine hundred eighty-nine thousand, nine hundred five".