79072101 has 6 divisors (see below), whose sum is σ = 114215270. Its totient is φ = 52714728.

The previous prime is 79072093. The next prime is 79072111. The reversal of 79072101 is 10127097.

It can be written as a sum of positive squares in only one way, i.e., 70812225 + 8259876 = 8415^2 + 2874^2 .

It is not a de Polignac number, because 79072101 - 2³ = 79072093 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 (79072111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4392886 + ... + 4392903.

Almost surely, 2^79072101 is an apocalyptic number.

It is an amenable number.

79072101 is a deficient number, since it is larger than the sum of its proper divisors (35143169).

79072101 is a wasteful number, since it uses less digits than its factorization.

79072101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8785795 (or 8785792 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 79072101 is about 8892.2494904270. The cubic root of 79072101 is about 429.2145405146.

Adding to 79072101 its reverse (10127097), we get a palindrome (89199198).

The spelling of 79072101 in words is "seventy-nine million, seventy-two thousand, one hundred one".