971440 has 20 divisors (see below), whose sum is σ = 2258784. Its totient is φ = 388544.

The previous prime is 971429. The next prime is 971441. The reversal of 971440 is 44179.

971440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (971441) 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, 5992 + ... + 6151.

2⁹⁷¹⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

971440 is an abundant number, since it is smaller than the sum of its proper divisors (1287344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

971440 is a wasteful number, since it uses less digits than its factorization.

971440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12156 (or 12150 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 971440 is about 985.6165583025. The cubic root of 971440 is about 99.0387903632.

The spelling of 971440 in words is "nine hundred seventy-one thousand, four hundred forty".