871925407 has 2 divisors, whose sum is σ = 871925408. Its totient is φ = 871925406.

The previous prime is 871925357. The next prime is 871925441. The reversal of 871925407 is 704529178.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 871925407 - 2¹⁹ = 871401119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (871925477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435962703 + 435962704.

It is an arithmetic number, because the mean of its divisors is an integer number (435962704).

Almost surely, 2^871925407 is an apocalyptic number.

871925407 is a deficient number, since it is larger than the sum of its proper divisors (1).

871925407 is an equidigital number, since it uses as much as digits as its factorization.

871925407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 871925407 is about 29528.3830745945. The cubic root of 871925407 is about 955.3439938375.

The spelling of 871925407 in words is "eight hundred seventy-one million, nine hundred twenty-five thousand, four hundred seven".