100090450 has 12 divisors (see below), whose sum is σ = 186168330. Its totient is φ = 40036160.

The previous prime is 100090427. The next prime is 100090477. The reversal of 100090450 is 54090001.

It can be written as a sum of positive squares in 3 ways, for example, as 52577001 + 47513449 = 7251^2 + 6893^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1000855 + ... + 1000954.

Almost surely, 2^100090450 is an apocalyptic number.

100090450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100090450 is a deficient number, since it is larger than the sum of its proper divisors (86077880).

100090450 is a wasteful number, since it uses less digits than its factorization.

100090450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001821 (or 2001816 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 100090450 is about 10004.5214778119. The cubic root of 100090450 is about 464.2987850927.

The spelling of 100090450 in words is "one hundred million, ninety thousand, four hundred fifty".