869278465 has 8 divisors (see below), whose sum is σ = 1137964608. Its totient is φ = 632202480.

The previous prime is 869278439. The next prime is 869278469. The reversal of 869278465 is 564872968.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 869278465 - 2¹⁵ = 869245697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55), and also a Moran number because the ratio is a prime number: 15805063 = 869278465 / (8 + 6 + 9 + 2 + 7 + 8 + 4 + 6 + 5).

It is not an unprimeable number, because it can be changed into a prime (869278469) 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 7 ways as a sum of consecutive naturals, for example, 7902477 + ... + 7902586.

It is an arithmetic number, because the mean of its divisors is an integer number (142245576).

Almost surely, 2^869278465 is an apocalyptic number.

It is an amenable number.

869278465 is a deficient number, since it is larger than the sum of its proper divisors (268686143).

869278465 is a wasteful number, since it uses less digits than its factorization.

869278465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15805079.

The product of its digits is 5806080, while the sum is 55.

The square root of 869278465 is about 29483.5287067203. The cubic root of 869278465 is about 954.3762874585.

The spelling of 869278465 in words is "eight hundred sixty-nine million, two hundred seventy-eight thousand, four hundred sixty-five".