812419 has 4 divisors (see below), whose sum is σ = 818944. Its totient is φ = 805896.

The previous prime is 812401. The next prime is 812431. The reversal of 812419 is 914218.

It is a happy number.

812419 is nontrivially palindromic in base 8.

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

It is a cyclic number.

It is not a de Polignac number, because 812419 - 2⁵ = 812387 is a prime.

It is a super-2 number, since 2×812419² = 1320049263122, 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 = 812393 and 812402.

It is not an unprimeable number, because it can be changed into a prime (812519) 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, 3072 + ... + 3325.

It is an arithmetic number, because the mean of its divisors is an integer number (204736).

2⁸¹²⁴¹⁹ is an apocalyptic number.

812419 is a deficient number, since it is larger than the sum of its proper divisors (6525).

812419 is a wasteful number, since it uses less digits than its factorization.

812419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6524.

The product of its digits is 576, while the sum is 25.

The square root of 812419 is about 901.3428870302. The cubic root of 812419 is about 93.3096779620.

It can be divided in two parts, 81 and 2419, that added together give a square (2500 = 50²).

The spelling of 812419 in words is "eight hundred twelve thousand, four hundred nineteen".