870304393 has 4 divisors (see below), whose sum is σ = 994633600. Its totient is φ = 745975188.

The previous prime is 870304373. The next prime is 870304427. The reversal of 870304393 is 393403078.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 393403078 = 2 ⋅196701539.

It is not a de Polignac number, because 870304393 - 2²⁵ = 836749961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870304313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62164593 + ... + 62164606.

It is an arithmetic number, because the mean of its divisors is an integer number (248658400).

Almost surely, 2^870304393 is an apocalyptic number.

It is an amenable number.

870304393 is a deficient number, since it is larger than the sum of its proper divisors (124329207).

870304393 is a wasteful number, since it uses less digits than its factorization.

870304393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124329206.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 870304393 is about 29500.9219008491. The cubic root of 870304393 is about 954.7515935156.

The spelling of 870304393 in words is "eight hundred seventy million, three hundred four thousand, three hundred ninety-three".