100009490 has 24 divisors (see below), whose sum is σ = 209408652. Its totient is φ = 34288800.

The previous prime is 100009477. The next prime is 100009499. The reversal of 100009490 is 94900001.

It can be written as a sum of positive squares in 2 ways, for example, as 95628841 + 4380649 = 9779^2 + 2093^2 .

It is not an unprimeable number, because it can be changed into a prime (100009499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101561 + ... + 102540.

Almost surely, 2^100009490 is an apocalyptic number.

100009490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100009490 is an abundant number, since it is smaller than the sum of its proper divisors (109399162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100009490 is a wasteful number, since it uses less digits than its factorization.

100009490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204122 (or 204115 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 100009490 is about 10000.4744887430. The cubic root of 100009490 is about 464.1735657895.

Adding to 100009490 its reverse (94900001), we get a palindrome (194909491).

The spelling of 100009490 in words is "one hundred million, nine thousand, four hundred ninety".