100434973 has 2 divisors, whose sum is σ = 100434974. Its totient is φ = 100434972.

The previous prime is 100434959. The next prime is 100434989. The reversal of 100434973 is 379434001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68591524 + 31843449 = 8282^2 + 5643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100434973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100434073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50217486 + 50217487.

It is an arithmetic number, because the mean of its divisors is an integer number (50217487).

Almost surely, 2^100434973 is an apocalyptic number.

It is an amenable number.

100434973 is a deficient number, since it is larger than the sum of its proper divisors (1).

100434973 is an equidigital number, since it uses as much as digits as its factorization.

100434973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 100434973 is about 10021.7250511077. The cubic root of 100434973 is about 464.8308985461.

Adding to 100434973 its reverse (379434001), we get a palindrome (479868974).

The spelling of 100434973 in words is "one hundred million, four hundred thirty-four thousand, nine hundred seventy-three".