100920979 has 2 divisors, whose sum is σ = 100920980. Its totient is φ = 100920978.

The previous prime is 100920977. The next prime is 100920991. The reversal of 100920979 is 979029001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100920979 - 2¹ = 100920977 is a prime.

Together with 100920977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (100920971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50460489 + 50460490.

It is an arithmetic number, because the mean of its divisors is an integer number (50460490).

Almost surely, 2^100920979 is an apocalyptic number.

100920979 is a deficient number, since it is larger than the sum of its proper divisors (1).

100920979 is an equidigital number, since it uses as much as digits as its factorization.

100920979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 100920979 is about 10045.9434101532. The cubic root of 100920979 is about 465.5794664361.

The spelling of 100920979 in words is "one hundred million, nine hundred twenty thousand, nine hundred seventy-nine".