100499540 has 12 divisors (see below), whose sum is σ = 211049076. Its totient is φ = 40199808.

The previous prime is 100499527. The next prime is 100499543. The reversal of 100499540 is 45994001.

It can be written as a sum of positive squares in 2 ways, for example, as 74407876 + 26091664 = 8626^2 + 5108^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100499497 and 100499506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100499543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2512469 + ... + 2512508.

It is an arithmetic number, because the mean of its divisors is an integer number (17587423).

Almost surely, 2^100499540 is an apocalyptic number.

100499540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100499540 is an abundant number, since it is smaller than the sum of its proper divisors (110549536).

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

100499540 is a wasteful number, since it uses less digits than its factorization.

100499540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024986 (or 5024984 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 100499540 is about 10024.9458851407. The cubic root of 100499540 is about 464.9304863907.

The spelling of 100499540 in words is "one hundred million, four hundred ninety-nine thousand, five hundred forty".