840936924 has 48 divisors (see below), whose sum is σ = 2182650400. Its totient is φ = 279998208.

The previous prime is 840936923. The next prime is 840936931. The reversal of 840936924 is 429639048.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 840936924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840936923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105114 + ... + 112830.

Almost surely, 2^840936924 is an apocalyptic number.

It is an amenable number.

840936924 is an abundant number, since it is smaller than the sum of its proper divisors (1341713476).

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

840936924 is a wasteful number, since it uses less digits than its factorization.

840936924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8739 (or 8731 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 840936924 is about 28998.9124623666. The cubic root of 840936924 is about 943.8894689484.

The spelling of 840936924 in words is "eight hundred forty million, nine hundred thirty-six thousand, nine hundred twenty-four".