100489447 has 4 divisors (see below), whose sum is σ = 103205416. Its totient is φ = 97773480.

The previous prime is 100489439. The next prime is 100489451. The reversal of 100489447 is 744984001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100489447 - 2³ = 100489439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 2715931 = 100489447 / (1 + 0 + 0 + 4 + 8 + 9 + 4 + 4 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100489427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1357929 + ... + 1358002.

It is an arithmetic number, because the mean of its divisors is an integer number (25801354).

Almost surely, 2^100489447 is an apocalyptic number.

100489447 is a deficient number, since it is larger than the sum of its proper divisors (2715969).

100489447 is an equidigital number, since it uses as much as digits as its factorization.

100489447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715968.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 100489447 is about 10024.4424782628. The cubic root of 100489447 is about 464.9149218071.

The spelling of 100489447 in words is "one hundred million, four hundred eighty-nine thousand, four hundred forty-seven".