134479247 has 4 divisors (see below), whose sum is σ = 153690576. Its totient is φ = 115267920.

The previous prime is 134479237. The next prime is 134479249. The reversal of 134479247 is 742974431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742974431 = 1627 ⋅456653.

It is a cyclic number.

It is not a de Polignac number, because 134479247 - 2¹⁴ = 134462863 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 (134479249) 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, 9605654 + ... + 9605667.

It is an arithmetic number, because the mean of its divisors is an integer number (38422644).

Almost surely, 2^134479247 is an apocalyptic number.

134479247 is a deficient number, since it is larger than the sum of its proper divisors (19211329).

134479247 is an equidigital number, since it uses as much as digits as its factorization.

134479247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19211328.

The product of its digits is 169344, while the sum is 41.

The square root of 134479247 is about 11596.5187448648. The cubic root of 134479247 is about 512.3323228579.

The spelling of 134479247 in words is "one hundred thirty-four million, four hundred seventy-nine thousand, two hundred forty-seven".