419861 has 4 divisors (see below), whose sum is σ = 452172. Its totient is φ = 387552.

The previous prime is 419831. The next prime is 419873. The reversal of 419861 is 168914.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 168914 = 2 ⋅84457.

It can be written as a sum of positive squares in 2 ways, for example, as 255025 + 164836 = 505^2 + 406^2 .

It is a cyclic number.

It is not a de Polignac number, because 419861 - 2¹⁰ = 418837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (419801) 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, 16136 + ... + 16161.

It is an arithmetic number, because the mean of its divisors is an integer number (113043).

2⁴¹⁹⁸⁶¹ is an apocalyptic number.

It is an amenable number.

419861 is a deficient number, since it is larger than the sum of its proper divisors (32311).

419861 is a wasteful number, since it uses less digits than its factorization.

419861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32310.

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

The square root of 419861 is about 647.9668201382. The cubic root of 419861 is about 74.8804614268.

The spelling of 419861 in words is "four hundred nineteen thousand, eight hundred sixty-one".