871354978 has 16 divisors (see below), whose sum is σ = 1420034616. Its totient is φ = 398603520.

The previous prime is 871354969. The next prime is 871355003. The reversal of 871354978 is 879453178.

It can be written as a sum of positive squares in 4 ways, for example, as 353928969 + 517426009 = 18813^2 + 22747^2 .

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, 145353 + ... + 151228.

Almost surely, 2^871354978 is an apocalyptic number.

871354978 is a deficient number, since it is larger than the sum of its proper divisors (548679638).

871354978 is a wasteful number, since it uses less digits than its factorization.

871354978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296709.

The product of its digits is 1693440, while the sum is 52.

The square root of 871354978 is about 29518.7224994579. The cubic root of 871354978 is about 955.1356140847.

The spelling of 871354978 in words is "eight hundred seventy-one million, three hundred fifty-four thousand, nine hundred seventy-eight".