877800040 has 32 divisors (see below), whose sum is σ = 2126978280. Its totient is φ = 324110592.

The previous prime is 877799987. The next prime is 877800041. The reversal of 877800040 is 40008778.

It can be written as a sum of positive squares in 4 ways, for example, as 807810084 + 69989956 = 28422^2 + 8366^2 .

It is a junction number, because it is equal to n+sod(n) for n = 877799969 and 877800005.

It is not an unprimeable number, because it can be changed into a prime (877800041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843519 + ... + 844558.

Almost surely, 2^877800040 is an apocalyptic number.

It is an amenable number.

877800040 is an abundant number, since it is smaller than the sum of its proper divisors (1249178240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

877800040 is a wasteful number, since it uses less digits than its factorization.

877800040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688101 (or 1688097 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 877800040 is about 29627.6904263562. The cubic root of 877800040 is about 957.4847495793.

The spelling of 877800040 in words is "eight hundred seventy-seven million, eight hundred thousand, forty".