79428707 has 4 divisors (see below), whose sum is σ = 79904496. Its totient is φ = 78952920.

The previous prime is 79428703. The next prime is 79428749. The reversal of 79428707 is 70782497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70782497 = 613 ⋅115469.

It is a cyclic number.

It is not a de Polignac number, because 79428707 - 2² = 79428703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79428703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237644 + ... + 237977.

It is an arithmetic number, because the mean of its divisors is an integer number (19976124).

Almost surely, 2^79428707 is an apocalyptic number.

79428707 is a deficient number, since it is larger than the sum of its proper divisors (475789).

79428707 is a wasteful number, since it uses less digits than its factorization.

79428707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475788.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 79428707 is about 8912.2784404438. The cubic root of 79428707 is about 429.8588088818.

The spelling of 79428707 in words is "seventy-nine million, four hundred twenty-eight thousand, seven hundred seven".