870394769 has 4 divisors (see below), whose sum is σ = 916205040. Its totient is φ = 824584500.

The previous prime is 870394753. The next prime is 870394793. The reversal of 870394769 is 967493078.

870394769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 967493078 = 2 ⋅483746539.

It is a cyclic number.

It is not a de Polignac number, because 870394769 - 2⁴ = 870394753 is a prime.

It is a super-2 number, since 2×870394769² = 1515174107805126722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 870394769.

It is not an unprimeable number, because it can be changed into a prime (870394709) 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, 22905107 + ... + 22905144.

It is an arithmetic number, because the mean of its divisors is an integer number (229051260).

Almost surely, 2^870394769 is an apocalyptic number.

It is an amenable number.

870394769 is a deficient number, since it is larger than the sum of its proper divisors (45810271).

870394769 is a wasteful number, since it uses less digits than its factorization.

870394769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45810270.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 870394769 is about 29502.4536098271. The cubic root of 870394769 is about 954.7846408203.

The spelling of 870394769 in words is "eight hundred seventy million, three hundred ninety-four thousand, seven hundred sixty-nine".