840937 has 4 divisors (see below), whose sum is σ = 868096. Its totient is φ = 813780.

The previous prime is 840929. The next prime is 840941. The reversal of 840937 is 739048.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 840937 - 2³ = 840929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 27127 = 840937 / (8 + 4 + 0 + 9 + 3 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 840899 and 840908.

It is not an unprimeable number, because it can be changed into a prime (840907) 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 3 ways as a sum of consecutive naturals, for example, 13533 + ... + 13594.

It is an arithmetic number, because the mean of its divisors is an integer number (217024).

2⁸⁴⁰⁹³⁷ is an apocalyptic number.

It is an amenable number.

840937 is a deficient number, since it is larger than the sum of its proper divisors (27159).

840937 is a wasteful number, since it uses less digits than its factorization.

840937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27158.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 840937 is about 917.0261719275. The cubic root of 840937 is about 94.3889497383.

It can be divided in two parts, 84093 and 7, that added together give a square (84100 = 290²).

The spelling of 840937 in words is "eight hundred forty thousand, nine hundred thirty-seven".