840633464 has 24 divisors (see below), whose sum is σ = 1732505880. Its totient is φ = 382105680.

The previous prime is 840633439. The next prime is 840633467. The reversal of 840633464 is 464336048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840633467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 433244 + ... + 435179.

It is an arithmetic number, because the mean of its divisors is an integer number (72187745).

Almost surely, 2^840633464 is an apocalyptic number.

It is an amenable number.

840633464 is an abundant number, since it is smaller than the sum of its proper divisors (891872416).

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

840633464 is a wasteful number, since it uses less digits than its factorization.

840633464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868451 (or 868436 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The square root of 840633464 is about 28993.6797250711. The cubic root of 840633464 is about 943.7759181573.

The spelling of 840633464 in words is "eight hundred forty million, six hundred thirty-three thousand, four hundred sixty-four".