100489771 has 4 divisors (see below), whose sum is σ = 106400952. Its totient is φ = 94578592.

The previous prime is 100489759. The next prime is 100489777. The reversal of 100489771 is 177984001.

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

It is a cyclic number.

It is not a de Polignac number, because 100489771 - 2¹⁵ = 100457003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100489771.

It is not an unprimeable number, because it can be changed into a prime (100489777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2955565 + ... + 2955598.

It is an arithmetic number, because the mean of its divisors is an integer number (26600238).

Almost surely, 2^100489771 is an apocalyptic number.

100489771 is a deficient number, since it is larger than the sum of its proper divisors (5911181).

100489771 is an equidigital number, since it uses as much as digits as its factorization.

100489771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911180.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 100489771 is about 10024.4586387495. The cubic root of 100489771 is about 464.9154214690.

The spelling of 100489771 in words is "one hundred million, four hundred eighty-nine thousand, seven hundred seventy-one".