100428079 has 2 divisors, whose sum is σ = 100428080. Its totient is φ = 100428078.

The previous prime is 100428059. The next prime is 100428103. The reversal of 100428079 is 970824001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100428079 - 2⁵ = 100428047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100428079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100428059) 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 as a sum of consecutive naturals, namely, 50214039 + 50214040.

It is an arithmetic number, because the mean of its divisors is an integer number (50214040).

Almost surely, 2^100428079 is an apocalyptic number.

100428079 is a deficient number, since it is larger than the sum of its proper divisors (1).

100428079 is an equidigital number, since it uses as much as digits as its factorization.

100428079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 100428079 is about 10021.3810924443. The cubic root of 100428079 is about 464.8202627505.

The spelling of 100428079 in words is "one hundred million, four hundred twenty-eight thousand, seventy-nine".