840868037 has 4 divisors (see below), whose sum is σ = 841225056. Its totient is φ = 840511020.

The previous prime is 840868027. The next prime is 840868043. The reversal of 840868037 is 730868048.

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 840868037 - 2¹⁸ = 840605893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840868027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174953 + ... + 179694.

It is an arithmetic number, because the mean of its divisors is an integer number (210306264).

Almost surely, 2^840868037 is an apocalyptic number.

It is an amenable number.

840868037 is a deficient number, since it is larger than the sum of its proper divisors (357019).

840868037 is a wasteful number, since it uses less digits than its factorization.

840868037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357018.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 840868037 is about 28997.7246866026. The cubic root of 840868037 is about 943.8636947247.

The spelling of 840868037 in words is "eight hundred forty million, eight hundred sixty-eight thousand, thirty-seven".