100454689 has 2 divisors, whose sum is σ = 100454690. Its totient is φ = 100454688.

The previous prime is 100454687. The next prime is 100454693. The reversal of 100454689 is 986454001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100400400 + 54289 = 10020^2 + 233^2 .

It is a cyclic number.

It is not a de Polignac number, because 100454689 - 2¹ = 100454687 is a prime.

It is a super-2 number, since 2×100454689² = 20182289084173442, which contains 22 as substring.

Together with 100454687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (100454681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50227344 + 50227345.

It is an arithmetic number, because the mean of its divisors is an integer number (50227345).

Almost surely, 2^100454689 is an apocalyptic number.

It is an amenable number.

100454689 is a deficient number, since it is larger than the sum of its proper divisors (1).

100454689 is an equidigital number, since it uses as much as digits as its factorization.

100454689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 100454689 is about 10022.7086658248. The cubic root of 100454689 is about 464.8613129396.

The spelling of 100454689 in words is "one hundred million, four hundred fifty-four thousand, six hundred eighty-nine".