79681469 has 8 divisors (see below), whose sum is σ = 91120320. Its totient is φ = 68256576.

The previous prime is 79681463. The next prime is 79681477. The reversal of 79681469 is 96418697.

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

It is a cyclic number.

It is not a de Polignac number, because 79681469 - 2⁸ = 79681213 is a prime.

It is a super-2 number, since 2×79681469² = 12698273003995922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79681463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16082 + ... + 20444.

It is an arithmetic number, because the mean of its divisors is an integer number (11390040).

Almost surely, 2^79681469 is an apocalyptic number.

It is an amenable number.

79681469 is a deficient number, since it is larger than the sum of its proper divisors (11438851).

79681469 is a wasteful number, since it uses less digits than its factorization.

79681469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6979.

The product of its digits is 653184, while the sum is 50.

The square root of 79681469 is about 8926.4477257193. The cubic root of 79681469 is about 430.3142987884.

The spelling of 79681469 in words is "seventy-nine million, six hundred eighty-one thousand, four hundred sixty-nine".