79485721 has 8 divisors (see below), whose sum is σ = 95622080. Its totient is φ = 64544688.

The previous prime is 79485719. The next prime is 79485737. The reversal of 79485721 is 12758497.

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 79485721 - 2¹ = 79485719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79485751) 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, 298686 + ... + 298951.

It is an arithmetic number, because the mean of its divisors is an integer number (11952760).

Almost surely, 2^79485721 is an apocalyptic number.

It is an amenable number.

79485721 is a deficient number, since it is larger than the sum of its proper divisors (16136359).

79485721 is a wasteful number, since it uses less digits than its factorization.

79485721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597663.

The product of its digits is 141120, while the sum is 43.

The square root of 79485721 is about 8915.4764875468. The cubic root of 79485721 is about 429.9616353008.

The spelling of 79485721 in words is "seventy-nine million, four hundred eighty-five thousand, seven hundred twenty-one".