870479145 has 12 divisors (see below), whose sum is σ = 1508830596. Its totient is φ = 464255520.

The previous prime is 870479119. The next prime is 870479177. The reversal of 870479145 is 541974078.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 283046976 + 587432169 = 16824^2 + 24237^2 .

It is not a de Polignac number, because 870479145 - 2⁶ = 870479081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 19343981 = 870479145 / (8 + 7 + 0 + 4 + 7 + 9 + 1 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 870479145.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9671946 + ... + 9672035.

It is an arithmetic number, because the mean of its divisors is an integer number (125735883).

Almost surely, 2^870479145 is an apocalyptic number.

It is an amenable number.

870479145 is a deficient number, since it is larger than the sum of its proper divisors (638351451).

870479145 is a wasteful number, since it uses less digits than its factorization.

870479145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19343992 (or 19343989 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 870479145 is about 29503.8835579318. The cubic root of 870479145 is about 954.8154920726.

The spelling of 870479145 in words is "eight hundred seventy million, four hundred seventy-nine thousand, one hundred forty-five".