20100079 has 2 divisors, whose sum is σ = 20100080. Its totient is φ = 20100078.

The previous prime is 20100053. The next prime is 20100083. The reversal of 20100079 is 97000102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20100079 - 2⁹ = 20099567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20101079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050039 + 10050040.

It is an arithmetic number, because the mean of its divisors is an integer number (10050040).

Almost surely, 2^20100079 is an apocalyptic number.

20100079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100079 is an equidigital number, since it uses as much as digits as its factorization.

20100079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 20100079 is about 4483.3111647531. The cubic root of 20100079 is about 271.8937688897.

The spelling of 20100079 in words is "twenty million, one hundred thousand, seventy-nine".