861959375 has 12 divisors (see below), whose sum is σ = 1077384168. Its totient is φ = 689565000.

The previous prime is 861959369. The next prime is 861959429. The reversal of 861959375 is 573959168.

861959375 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 861959375 - 2¹⁶ = 861893839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134789 + ... + 141038.

It is an arithmetic number, because the mean of its divisors is an integer number (89782014).

Almost surely, 2^861959375 is an apocalyptic number.

861959375 is a deficient number, since it is larger than the sum of its proper divisors (215424793).

861959375 is an frugal number, since it uses more digits than its factorization.

861959375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275852 (or 275832 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 53.

The square root of 861959375 is about 29359.1446571592. The cubic root of 861959375 is about 951.6902043648.

The spelling of 861959375 in words is "eight hundred sixty-one million, nine hundred fifty-nine thousand, three hundred seventy-five".