971140479 has 4 divisors (see below), whose sum is σ = 1294853976. Its totient is φ = 647426984.

The previous prime is 971140463. The next prime is 971140501. The reversal of 971140479 is 974041179.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 971140479 - 2⁴ = 971140463 is a prime.

It is a super-2 number, since 2×971140479² = 1886227659904698882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 971140479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971140409) 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, 161856744 + ... + 161856749.

It is an arithmetic number, because the mean of its divisors is an integer number (323713494).

Almost surely, 2^971140479 is an apocalyptic number.

971140479 is a deficient number, since it is larger than the sum of its proper divisors (323713497).

971140479 is a wasteful number, since it uses less digits than its factorization.

971140479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323713496.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 971140479 is about 31163.1269130683. The cubic root of 971140479 is about 990.2861054529.

The spelling of 971140479 in words is "nine hundred seventy-one million, one hundred forty thousand, four hundred seventy-nine".