971948878 has 8 divisors (see below), whose sum is σ = 1466068680. Its totient is φ = 483259320.

The previous prime is 971948863. The next prime is 971948899. The reversal of 971948878 is 878849179.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×971948878³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1357113 + ... + 1357828.

It is an arithmetic number, because the mean of its divisors is an integer number (183258585).

Almost surely, 2^971948878 is an apocalyptic number.

971948878 is a deficient number, since it is larger than the sum of its proper divisors (494119802).

971948878 is a wasteful number, since it uses less digits than its factorization.

971948878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715122.

The product of its digits is 8128512, while the sum is 61.

The square root of 971948878 is about 31176.0946560021. The cubic root of 971948878 is about 990.5608079931.

The spelling of 971948878 in words is "nine hundred seventy-one million, nine hundred forty-eight thousand, eight hundred seventy-eight".