128379707 has 2 divisors, whose sum is σ = 128379708. Its totient is φ = 128379706.

The previous prime is 128379703. The next prime is 128379731. The reversal of 128379707 is 707973821.

It is a weak prime.

It is an emirp because it is prime and its reverse (707973821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128379707 - 2² = 128379703 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128379703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64189853 + 64189854.

It is an arithmetic number, because the mean of its divisors is an integer number (64189854).

Almost surely, 2^128379707 is an apocalyptic number.

128379707 is a deficient number, since it is larger than the sum of its proper divisors (1).

128379707 is an equidigital number, since it uses as much as digits as its factorization.

128379707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 128379707 is about 11330.4769096451. The cubic root of 128379707 is about 504.4662622160.

The spelling of 128379707 in words is "one hundred twenty-eight million, three hundred seventy-nine thousand, seven hundred seven".