79278469 has 4 divisors (see below), whose sum is σ = 83451040. Its totient is φ = 75105900.

The previous prime is 79278443. The next prime is 79278481. The reversal of 79278469 is 96487297.

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: 96487297 = 2549 ⋅37853.

It is a cyclic number.

It is not a de Polignac number, because 79278469 - 2¹³ = 79270277 is a prime.

It is a super-2 number, since 2×79278469² = 12570151293967922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79279469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2086257 + ... + 2086294.

It is an arithmetic number, because the mean of its divisors is an integer number (20862760).

Almost surely, 2^79278469 is an apocalyptic number.

It is an amenable number.

79278469 is a deficient number, since it is larger than the sum of its proper divisors (4172571).

79278469 is a wasteful number, since it uses less digits than its factorization.

79278469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4172570.

The product of its digits is 1524096, while the sum is 52.

The square root of 79278469 is about 8903.8457421498. The cubic root of 79278469 is about 429.5876143686.

The spelling of 79278469 in words is "seventy-nine million, two hundred seventy-eight thousand, four hundred sixty-nine".