128714479 has 4 divisors (see below), whose sum is σ = 128770920. Its totient is φ = 128658040.

The previous prime is 128714471. The next prime is 128714483. The reversal of 128714479 is 974417821.

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

It is a cyclic number.

It is not a de Polignac number, because 128714479 - 2³ = 128714471 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 (128714471) 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, 24649 + ... + 29410.

It is an arithmetic number, because the mean of its divisors is an integer number (32192730).

Almost surely, 2^128714479 is an apocalyptic number.

128714479 is a deficient number, since it is larger than the sum of its proper divisors (56441).

128714479 is an equidigital number, since it uses as much as digits as its factorization.

128714479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56440.

The product of its digits is 112896, while the sum is 43.

The square root of 128714479 is about 11345.2403676608. The cubic root of 128714479 is about 504.9043755810.

The spelling of 128714479 in words is "one hundred twenty-eight million, seven hundred fourteen thousand, four hundred seventy-nine".