79701971 has 4 divisors (see below), whose sum is σ = 79779000. Its totient is φ = 79624944.

The previous prime is 79701953. The next prime is 79702003. The reversal of 79701971 is 17910797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17910797 = 293 ⋅61129.

It is a cyclic number.

It is not a de Polignac number, because 79701971 - 2²² = 75507667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79701901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36941 + ... + 39038.

It is an arithmetic number, because the mean of its divisors is an integer number (19944750).

Almost surely, 2^79701971 is an apocalyptic number.

79701971 is a deficient number, since it is larger than the sum of its proper divisors (77029).

79701971 is a wasteful number, since it uses less digits than its factorization.

79701971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77028.

The product of its (nonzero) digits is 27783, while the sum is 41.

The square root of 79701971 is about 8927.5960370079. The cubic root of 79701971 is about 430.3512021710.

The spelling of 79701971 in words is "seventy-nine million, seven hundred one thousand, nine hundred seventy-one".