100040219 has 4 divisors (see below), whose sum is σ = 100070544. Its totient is φ = 100009896.

The previous prime is 100040201. The next prime is 100040233. The reversal of 100040219 is 912040001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100040219 is a prime.

It is a super-2 number, since 2×100040219² = 20016090835135922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100040197 and 100040206.

It is not an unprimeable number, because it can be changed into a prime (100040249) 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, 9512 + ... + 17045.

It is an arithmetic number, because the mean of its divisors is an integer number (25017636).

Almost surely, 2^100040219 is an apocalyptic number.

100040219 is a deficient number, since it is larger than the sum of its proper divisors (30325).

100040219 is an equidigital number, since it uses as much as digits as its factorization.

100040219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30324.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 100040219 is about 10002.0107478447. The cubic root of 100040219 is about 464.2211017079.

The spelling of 100040219 in words is "one hundred million, forty thousand, two hundred nineteen".