79049221 has 4 divisors (see below), whose sum is σ = 79111744. Its totient is φ = 78986700.

The previous prime is 79049219. The next prime is 79049233. The reversal of 79049221 is 12294097.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 79049221 - 2¹ = 79049219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79049261) 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 3 ways as a sum of consecutive naturals, for example, 29325 + ... + 31906.

It is an arithmetic number, because the mean of its divisors is an integer number (19777936).

Almost surely, 2^79049221 is an apocalyptic number.

It is an amenable number.

79049221 is a deficient number, since it is larger than the sum of its proper divisors (62523).

79049221 is a wasteful number, since it uses less digits than its factorization.

79049221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62522.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 79049221 is about 8890.9628837376. The cubic root of 79049221 is about 429.1731378964.

The spelling of 79049221 in words is "seventy-nine million, forty-nine thousand, two hundred twenty-one".