870400384501 has 6 divisors (see below), whose sum is σ = 891112996950. Its totient is φ = 850158513288.

The previous prime is 870400384463. The next prime is 870400384519. The reversal of 870400384501 is 105483004078.

It can be written as a sum of positive squares in only one way, i.e., 869231770276 + 1168614225 = 932326^2 + 34185^2 .

It is not a de Polignac number, because 870400384501 - 2²¹ = 870398287349 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 (870400384541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 235368726 + ... + 235372423.

It is an arithmetic number, because the mean of its divisors is an integer number (148518832825).

Almost surely, 2^870400384501 is an apocalyptic number.

It is an amenable number.

870400384501 is a deficient number, since it is larger than the sum of its proper divisors (20712612449).

870400384501 is an equidigital number, since it uses as much as digits as its factorization.

870400384501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470741235 (or 470741192 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

Adding to 870400384501 its reverse (105483004078), we get a palindrome (975883388579).

The spelling of 870400384501 in words is "eight hundred seventy billion, four hundred million, three hundred eighty-four thousand, five hundred one".