100809424 has 10 divisors (see below), whose sum is σ = 195318290. Its totient is φ = 50404704.

The previous prime is 100809409. The next prime is 100809463. The reversal of 100809424 is 424908001.

It can be written as a sum of positive squares in only one way, i.e., 99201600 + 1607824 = 9960^2 + 1268^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100809392 and 100809401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3150279 + ... + 3150310.

It is an arithmetic number, because the mean of its divisors is an integer number (19531829).

Almost surely, 2^100809424 is an apocalyptic number.

It is an amenable number.

100809424 is a deficient number, since it is larger than the sum of its proper divisors (94508866).

100809424 is an equidigital number, since it uses as much as digits as its factorization.

100809424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6300597 (or 6300591 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 100809424 is about 10040.3896338738. The cubic root of 100809424 is about 465.4078573665.

The spelling of 100809424 in words is "one hundred million, eight hundred nine thousand, four hundred twenty-four".