971799040 has 80 divisors (see below), whose sum is σ = 2347662240. Its totient is φ = 385781760.

The previous prime is 971799029. The next prime is 971799053. The reversal of 971799040 is 40997179.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354475 + ... + 357205.

It is an arithmetic number, because the mean of its divisors is an integer number (29345778).

Almost surely, 2^971799040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 971799040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1173831120).

971799040 is an abundant number, since it is smaller than the sum of its proper divisors (1375863200).

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

971799040 is a wasteful number, since it uses less digits than its factorization.

971799040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2893 (or 2877 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 971799040 is about 31173.6914721372. The cubic root of 971799040 is about 990.5099029570.

The spelling of 971799040 in words is "nine hundred seventy-one million, seven hundred ninety-nine thousand, forty".