840872007 has 24 divisors (see below), whose sum is σ = 1237048800. Its totient is φ = 550255680.

The previous prime is 840871991. The next prime is 840872017. The reversal of 840872007 is 700278048.

It is not a de Polignac number, because 840872007 - 2⁴ = 840871991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840872017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 327573 + ... + 330129.

It is an arithmetic number, because the mean of its divisors is an integer number (51543700).

Almost surely, 2^840872007 is an apocalyptic number.

840872007 is a deficient number, since it is larger than the sum of its proper divisors (396176793).

840872007 is a wasteful number, since it uses less digits than its factorization.

840872007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3223 (or 3220 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 840872007 is about 28997.7931401684. The cubic root of 840872007 is about 943.8651801472.

The spelling of 840872007 in words is "eight hundred forty million, eight hundred seventy-two thousand, seven".