840361 has 4 divisors (see below), whose sum is σ = 889812. Its totient is φ = 790912.

The previous prime is 840353. The next prime is 840439. The reversal of 840361 is 163048.

840361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 609961 + 230400 = 781^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 840361 - 2³ = 840353 is a prime.

It is a super-2 number, since 2×840361² = 1412413220642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840331) 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, 24700 + ... + 24733.

It is an arithmetic number, because the mean of its divisors is an integer number (222453).

2⁸⁴⁰³⁶¹ is an apocalyptic number.

It is an amenable number.

840361 is a deficient number, since it is larger than the sum of its proper divisors (49451).

840361 is a wasteful number, since it uses less digits than its factorization.

840361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49450.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 840361 is about 916.7120594821. The cubic root of 840361 is about 94.3673942382.

It can be divided in two parts, 8403 and 61, that added together give a square (8464 = 92²).

The spelling of 840361 in words is "eight hundred forty thousand, three hundred sixty-one".