79701121 has 4 divisors (see below), whose sum is σ = 80823744. Its totient is φ = 78578500.

The previous prime is 79701119. The next prime is 79701133. The reversal of 79701121 is 12110797.

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 79701121 - 2¹ = 79701119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79701121.

It is not an unprimeable number, because it can be changed into a prime (79701161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561205 + ... + 561346.

It is an arithmetic number, because the mean of its divisors is an integer number (20205936).

Almost surely, 2^79701121 is an apocalyptic number.

79701121 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

79701121 is a deficient number, since it is larger than the sum of its proper divisors (1122623).

79701121 is a wasteful number, since it uses less digits than its factorization.

79701121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122622.

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 79701121 is about 8927.5484316804. The cubic root of 79701121 is about 430.3496723058.

The spelling of 79701121 in words is "seventy-nine million, seven hundred one thousand, one hundred twenty-one".