971079569 has 4 divisors (see below), whose sum is σ = 1022189040. Its totient is φ = 919970100.

The previous prime is 971079533. The next prime is 971079581. The reversal of 971079569 is 965970179.

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, and also an emirpimes, since its reverse is a distinct semiprime: 965970179 = 47 ⋅20552557.

It is a cyclic number.

It is not a de Polignac number, because 971079569 - 2¹² = 971075473 is a prime.

It is a super-2 number, since 2×971079569² = 1885991058658451522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 971079569.

It is not an unprimeable number, because it can be changed into a prime (971079589) 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, 25554707 + ... + 25554744.

It is an arithmetic number, because the mean of its divisors is an integer number (255547260).

Almost surely, 2^971079569 is an apocalyptic number.

It is an amenable number.

971079569 is a deficient number, since it is larger than the sum of its proper divisors (51109471).

971079569 is a wasteful number, since it uses less digits than its factorization.

971079569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51109470.

The product of its (nonzero) digits is 1071630, while the sum is 53.

The square root of 971079569 is about 31162.1496209745. The cubic root of 971079569 is about 990.2654014151.

The spelling of 971079569 in words is "nine hundred seventy-one million, seventy-nine thousand, five hundred sixty-nine".