840459375 has 96 divisors (see below), whose sum is σ = 1779886080. Its totient is φ = 383940000.

The previous prime is 840459371. The next prime is 840459377. The reversal of 840459375 is 573954048.

It is not a de Polignac number, because 840459375 - 2² = 840459371 is a prime.

It is a super-2 number, since 2×840459375² = 1412743922050781250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 840459375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840459371) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 589914 + ... + 591336.

It is an arithmetic number, because the mean of its divisors is an integer number (18540480).

Almost surely, 2^840459375 is an apocalyptic number.

840459375 is an abundant number, since it is smaller than the sum of its proper divisors (939426705).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

840459375 is an equidigital number, since it uses as much as digits as its factorization.

840459375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 840459375 is about 28990.6773808409. The cubic root of 840459375 is about 943.7107639785.

The spelling of 840459375 in words is "eight hundred forty million, four hundred fifty-nine thousand, three hundred seventy-five".