100840049 has 8 divisors (see below), whose sum is σ = 106244640. Its totient is φ = 95445216.

The previous prime is 100840043. The next prime is 100840067. The reversal of 100840049 is 940048001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100840049 - 2⁸ = 100839793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100840043) 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 7 ways as a sum of consecutive naturals, for example, 29882 + ... + 33084.

It is an arithmetic number, because the mean of its divisors is an integer number (13280580).

Almost surely, 2^100840049 is an apocalyptic number.

100840049 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

100840049 is a deficient number, since it is larger than the sum of its proper divisors (5404591).

100840049 is a wasteful number, since it uses less digits than its factorization.

100840049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4879.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 100840049 is about 10041.9146082806. The cubic root of 100840049 is about 465.4549815076.

The spelling of 100840049 in words is "one hundred million, eight hundred forty thousand, forty-nine".