971142669 has 16 divisors (see below), whose sum is σ = 1644263040. Its totient is φ = 554938560.

The previous prime is 971142661. The next prime is 971142703. The reversal of 971142669 is 966241179.

It is not a de Polignac number, because 971142669 - 2³ = 971142661 is a prime.

It is a super-2 number, since 2×971142669² = 1886236167104887122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971142661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2568972 + ... + 2569349.

It is an arithmetic number, because the mean of its divisors is an integer number (102766440).

Almost surely, 2^971142669 is an apocalyptic number.

It is an amenable number.

971142669 is a deficient number, since it is larger than the sum of its proper divisors (673120371).

971142669 is a wasteful number, since it uses less digits than its factorization.

971142669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138337 (or 5138331 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 971142669 is about 31163.1620507291. The cubic root of 971142669 is about 990.2868498440.

The spelling of 971142669 in words is "nine hundred seventy-one million, one hundred forty-two thousand, six hundred sixty-nine".