864937143 has 32 divisors (see below), whose sum is σ = 1477440000. Its totient is φ = 489863808.

The previous prime is 864937141. The next prime is 864937147. The reversal of 864937143 is 341739468.

It is not a de Polignac number, because 864937143 - 2¹ = 864937141 is a prime.

It is a super-2 number, since 2×864937143² = 1496232522682004898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864937141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1108 + ... + 41606.

It is an arithmetic number, because the mean of its divisors is an integer number (46170000).

Almost surely, 2^864937143 is an apocalyptic number.

864937143 is a deficient number, since it is larger than the sum of its proper divisors (612502857).

864937143 is a wasteful number, since it uses less digits than its factorization.

864937143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40628 (or 40622 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 864937143 is about 29409.8137192332. The cubic root of 864937143 is about 952.7848636474.

It can be divided in two parts, 86493 and 7143, that added together give a square (93636 = 306²).

The spelling of 864937143 in words is "eight hundred sixty-four million, nine hundred thirty-seven thousand, one hundred forty-three".