407728679 has 2 divisors, whose sum is σ = 407728680. Its totient is φ = 407728678.

The previous prime is 407728639. The next prime is 407728729. The reversal of 407728679 is 976827704.

It is an a-pointer prime, because the next prime (407728729) can be obtained adding 407728679 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 407728679 - 2⁸ = 407728423 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (407728609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203864339 + 203864340.

It is an arithmetic number, because the mean of its divisors is an integer number (203864340).

Almost surely, 2^407728679 is an apocalyptic number.

407728679 is a deficient number, since it is larger than the sum of its proper divisors (1).

407728679 is an equidigital number, since it uses as much as digits as its factorization.

407728679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1185408, while the sum is 50.

The square root of 407728679 is about 20192.2925642434. The cubic root of 407728679 is about 741.5215097369.

The spelling of 407728679 in words is "four hundred seven million, seven hundred twenty-eight thousand, six hundred seventy-nine".