7870369 has 4 divisors (see below), whose sum is σ = 8475796. Its totient is φ = 7264944.

The previous prime is 7870367. The next prime is 7870391. The reversal of 7870369 is 9630787.

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 471969 + 7398400 = 687^2 + 2720^2 .

It is a cyclic number.

It is not a de Polignac number, because 7870369 - 2¹ = 7870367 is a prime.

It is a super-2 number, since 2×7870369² = 123885416392322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7870361) 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, 302694 + ... + 302719.

It is an arithmetic number, because the mean of its divisors is an integer number (2118949).

Almost surely, 2^7870369 is an apocalyptic number.

It is an amenable number.

7870369 is a deficient number, since it is larger than the sum of its proper divisors (605427).

7870369 is a wasteful number, since it uses less digits than its factorization.

7870369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605426.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 7870369 is about 2805.4177941975. The cubic root of 7870369 is about 198.9138537764.

The spelling of 7870369 in words is "seven million, eight hundred seventy thousand, three hundred sixty-nine".