840199416 has 64 divisors (see below), whose sum is σ = 2418958080. Its totient is φ = 238218240.

The previous prime is 840199391. The next prime is 840199463. The reversal of 840199416 is 614991048.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2920 + ... + 41096.

It is an arithmetic number, because the mean of its divisors is an integer number (37796220).

Almost surely, 2^840199416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840199416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1209479040).

840199416 is an abundant number, since it is smaller than the sum of its proper divisors (1578758664).

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

840199416 is a wasteful number, since it uses less digits than its factorization.

840199416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38324 (or 38320 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 840199416 is about 28986.1935410636. The cubic root of 840199416 is about 943.6134555256.

The spelling of 840199416 in words is "eight hundred forty million, one hundred ninety-nine thousand, four hundred sixteen".