840364395 has 32 divisors (see below), whose sum is σ = 1524230400. Its totient is φ = 391941504.

The previous prime is 840364381. The next prime is 840364397. The reversal of 840364395 is 593463048.

It is not a de Polignac number, because 840364395 - 2¹⁷ = 840233323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840364397) 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, 109705 + ... + 117114.

It is an arithmetic number, because the mean of its divisors is an integer number (47632200).

Almost surely, 2^840364395 is an apocalyptic number.

840364395 is a deficient number, since it is larger than the sum of its proper divisors (683866005).

840364395 is a wasteful number, since it uses less digits than its factorization.

840364395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226859.

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 840364395 is about 28989.0392217472. The cubic root of 840364395 is about 943.6752131723.

The spelling of 840364395 in words is "eight hundred forty million, three hundred sixty-four thousand, three hundred ninety-five".