100309249 has 4 divisors (see below), whose sum is σ = 100359936. Its totient is φ = 100258564.

The previous prime is 100309243. The next prime is 100309259. The reversal of 100309249 is 942903001.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-100309249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100309243) 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, 22249 + ... + 26374.

It is an arithmetic number, because the mean of its divisors is an integer number (25089984).

Almost surely, 2^100309249 is an apocalyptic number.

It is an amenable number.

100309249 is a deficient number, since it is larger than the sum of its proper divisors (50687).

100309249 is an equidigital number, since it uses as much as digits as its factorization.

100309249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50686.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 100309249 is about 10015.4505140807. The cubic root of 100309249 is about 464.6368598885.

The spelling of 100309249 in words is "one hundred million, three hundred nine thousand, two hundred forty-nine".