861419 has 16 divisors (see below), whose sum is σ = 1005312. Its totient is φ = 731808.

The previous prime is 861391. The next prime is 861433. The reversal of 861419 is 914168.

It is a cyclic number.

It is not a de Polignac number, because 861419 - 2⁸ = 861163 is a prime.

It is a super-2 number, since 2×861419² = 1484085387122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

861419 is a modest number, since divided by 1419 gives 86 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 861391 and 861400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12824 + ... + 12890.

It is an arithmetic number, because the mean of its divisors is an integer number (62832).

2⁸⁶¹⁴¹⁹ is an apocalyptic number.

861419 is a deficient number, since it is larger than the sum of its proper divisors (143893).

861419 is a wasteful number, since it uses less digits than its factorization.

861419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146.

The product of its digits is 1728, while the sum is 29.

The square root of 861419 is about 928.1266077427. The cubic root of 861419 is about 95.1491286599.

The spelling of 861419 in words is "eight hundred sixty-one thousand, four hundred nineteen".