870912001 has 4 divisors (see below), whose sum is σ = 873106132. Its totient is φ = 868717872.

The previous prime is 870911983. The next prime is 870912017. The reversal of 870912001 is 100219078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 525509776 + 345402225 = 22924^2 + 18585^2 .

It is a cyclic number.

It is not a de Polignac number, because 870912001 - 2²³ = 862523393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870912041) 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, 1096470 + ... + 1097263.

It is an arithmetic number, because the mean of its divisors is an integer number (218276533).

Almost surely, 2^870912001 is an apocalyptic number.

It is an amenable number.

870912001 is a deficient number, since it is larger than the sum of its proper divisors (2194131).

870912001 is a wasteful number, since it uses less digits than its factorization.

870912001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194130.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 870912001 is about 29511.2182229064. The cubic root of 870912001 is about 954.9737302606.

The spelling of 870912001 in words is "eight hundred seventy million, nine hundred twelve thousand, one".