100406219 has 2 divisors, whose sum is σ = 100406220. Its totient is φ = 100406218.

The previous prime is 100406213. The next prime is 100406269. The reversal of 100406219 is 912604001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100406219 - 2¹² = 100402123 is a prime.

It is a super-2 number, since 2×100406219² = 20162817627751922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 100406194 and 100406203.

It is not a weakly prime, because it can be changed into another prime (100406213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50203109 + 50203110.

It is an arithmetic number, because the mean of its divisors is an integer number (50203110).

Almost surely, 2^100406219 is an apocalyptic number.

100406219 is a deficient number, since it is larger than the sum of its proper divisors (1).

100406219 is an equidigital number, since it uses as much as digits as its factorization.

100406219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 100406219 is about 10020.2903650543. The cubic root of 100406219 is about 464.7865347720.

The spelling of 100406219 in words is "one hundred million, four hundred six thousand, two hundred nineteen".