100439770 has 16 divisors (see below), whose sum is σ = 184203720. Its totient is φ = 39417664.

The previous prime is 100439761. The next prime is 100439803. The reversal of 100439770 is 77934001.

It can be written as a sum of positive squares in 4 ways, for example, as 63728289 + 36711481 = 7983^2 + 6059^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 94225 + ... + 95284.

Almost surely, 2^100439770 is an apocalyptic number.

100439770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100439770 is a deficient number, since it is larger than the sum of its proper divisors (83763950).

100439770 is a wasteful number, since it uses less digits than its factorization.

100439770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189569.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 100439770 is about 10021.9643783043. The cubic root of 100439770 is about 464.8382988844.

The spelling of 100439770 in words is "one hundred million, four hundred thirty-nine thousand, seven hundred seventy".