79079421 has 8 divisors (see below), whose sum is σ = 105711840. Its totient is φ = 52583312.

The previous prime is 79079417. The next prime is 79079477. The reversal of 79079421 is 12497097.

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 79079421 - 2² = 79079417 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 79079421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79029421) 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, 32715 + ... + 35048.

It is an arithmetic number, because the mean of its divisors is an integer number (13213980).

Almost surely, 2^79079421 is an apocalyptic number.

It is an amenable number.

79079421 is a deficient number, since it is larger than the sum of its proper divisors (26632419).

79079421 is a wasteful number, since it uses less digits than its factorization.

79079421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68155.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 79079421 is about 8892.6610752912. The cubic root of 79079421 is about 429.2277847708.

The spelling of 79079421 in words is "seventy-nine million, seventy-nine thousand, four hundred twenty-one".