100780199 has 16 divisors (see below), whose sum is σ = 120970080. Its totient is φ = 82944000.

The previous prime is 100780171. The next prime is 100780217. The reversal of 100780199 is 991087001.

It is a cyclic number.

It is not a de Polignac number, because 100780199 - 2¹² = 100776103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100780499) 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 15 ways as a sum of consecutive naturals, for example, 7802 + ... + 16199.

It is an arithmetic number, because the mean of its divisors is an integer number (7560630).

Almost surely, 2^100780199 is an apocalyptic number.

100780199 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

100780199 is a deficient number, since it is larger than the sum of its proper divisors (20189881).

100780199 is a wasteful number, since it uses less digits than its factorization.

100780199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24050.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 100780199 is about 10038.9341565726. The cubic root of 100780199 is about 465.3628785716.

The spelling of 100780199 in words is "one hundred million, seven hundred eighty thousand, one hundred ninety-nine".