840848479 has 8 divisors (see below), whose sum is σ = 850866768. Its totient is φ = 830870400.

The previous prime is 840848473. The next prime is 840848497. The reversal of 840848479 is 974848048.

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

It is a cyclic number.

It is not a de Polignac number, because 840848479 - 2²⁷ = 706630751 is a prime.

It is a super-2 number, since 2×840848479² = 1414052329273226882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840848473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33109 + ... + 52705.

It is an arithmetic number, because the mean of its divisors is an integer number (106358346).

Almost surely, 2^840848479 is an apocalyptic number.

840848479 is a deficient number, since it is larger than the sum of its proper divisors (10018289).

840848479 is a wasteful number, since it uses less digits than its factorization.

840848479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20105.

The product of its (nonzero) digits is 2064384, while the sum is 52.

The square root of 840848479 is about 28997.3874512860. The cubic root of 840848479 is about 943.8563767990.

The spelling of 840848479 in words is "eight hundred forty million, eight hundred forty-eight thousand, four hundred seventy-nine".