840865466 has 8 divisors (see below), whose sum is σ = 1441483680. Its totient is φ = 360370908.

The previous prime is 840865451. The next prime is 840865499. The reversal of 840865466 is 664568048.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×840865466² = 1414109463822794312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 840865466.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30030896 + ... + 30030923.

It is an arithmetic number, because the mean of its divisors is an integer number (180185460).

Almost surely, 2^840865466 is an apocalyptic number.

840865466 is a deficient number, since it is larger than the sum of its proper divisors (600618214).

840865466 is a wasteful number, since it uses less digits than its factorization.

840865466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60061828.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The square root of 840865466 is about 28997.6803555043. The cubic root of 840865466 is about 943.8627327521.

The spelling of 840865466 in words is "eight hundred forty million, eight hundred sixty-five thousand, four hundred sixty-six".