100730489 has 4 divisors (see below), whose sum is σ = 100893840. Its totient is φ = 100567140.

The previous prime is 100730479. The next prime is 100730507. The reversal of 100730489 is 984037001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100730489 - 2⁴ = 100730473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100730449) 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, 80747 + ... + 81984.

It is an arithmetic number, because the mean of its divisors is an integer number (25223460).

Almost surely, 2^100730489 is an apocalyptic number.

It is an amenable number.

100730489 is a deficient number, since it is larger than the sum of its proper divisors (163351).

100730489 is an equidigital number, since it uses as much as digits as its factorization.

100730489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163350.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 100730489 is about 10036.4579907455. The cubic root of 100730489 is about 465.2863523179.

The spelling of 100730489 in words is "one hundred million, seven hundred thirty thousand, four hundred eighty-nine".