840882087 has 16 divisors (see below), whose sum is σ = 1246670080. Its totient is φ = 560174616.

The previous prime is 840882073. The next prime is 840882121. The reversal of 840882087 is 780288048.

It is not a de Polignac number, because 840882087 - 2⁸ = 840881831 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 (840882187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28308 + ... + 49830.

It is an arithmetic number, because the mean of its divisors is an integer number (77916880).

Almost surely, 2^840882087 is an apocalyptic number.

840882087 is a deficient number, since it is larger than the sum of its proper divisors (405787993).

840882087 is a wasteful number, since it uses less digits than its factorization.

840882087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22979 (or 22973 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

The square root of 840882087 is about 28997.9669459774. The cubic root of 840882087 is about 943.8689516776.

The spelling of 840882087 in words is "eight hundred forty million, eight hundred eighty-two thousand, eighty-seven".