100779473 has 4 divisors (see below), whose sum is σ = 100800420. Its totient is φ = 100758528.

The previous prime is 100779467. The next prime is 100779499. The reversal of 100779473 is 374977001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85507009 + 15272464 = 9247^2 + 3908^2 .

It is a cyclic number.

It is not a de Polignac number, because 100779473 - 2⁶ = 100779409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100779403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761 + ... + 14217.

It is an arithmetic number, because the mean of its divisors is an integer number (25200105).

Almost surely, 2^100779473 is an apocalyptic number.

It is an amenable number.

100779473 is a deficient number, since it is larger than the sum of its proper divisors (20947).

100779473 is an equidigital number, since it uses as much as digits as its factorization.

100779473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20946.

The product of its (nonzero) digits is 37044, while the sum is 38.

The square root of 100779473 is about 10038.8979972903. The cubic root of 100779473 is about 465.3617611091.

The spelling of 100779473 in words is "one hundred million, seven hundred seventy-nine thousand, four hundred seventy-three".