79678441 has 4 divisors (see below), whose sum is σ = 81531472. Its totient is φ = 77825412.

The previous prime is 79678433. The next prime is 79678471. The reversal of 79678441 is 14487697.

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: 14487697 = 7 ⋅2069671.

It is a cyclic number.

It is not a de Polignac number, because 79678441 - 2³ = 79678433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79678391 and 79678400.

It is not an unprimeable number, because it can be changed into a prime (79678421) 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, 926451 + ... + 926536.

It is an arithmetic number, because the mean of its divisors is an integer number (20382868).

Almost surely, 2^79678441 is an apocalyptic number.

It is an amenable number.

79678441 is a deficient number, since it is larger than the sum of its proper divisors (1853031).

79678441 is a wasteful number, since it uses less digits than its factorization.

79678441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853030.

The product of its digits is 338688, while the sum is 46.

The square root of 79678441 is about 8926.2781157658. The cubic root of 79678441 is about 430.3088478841.

The spelling of 79678441 in words is "seventy-nine million, six hundred seventy-eight thousand, four hundred forty-one".