83403940 has 24 divisors (see below), whose sum is σ = 175364280. Its totient is φ = 33320448.

The previous prime is 83403937. The next prime is 83403949. The reversal of 83403940 is 4930438.

It can be written as a sum of positive squares in 4 ways, for example, as 9684544 + 73719396 = 3112^2 + 8586^2 .

It is not an unprimeable number, because it can be changed into a prime (83403949) 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, 18114 + ... + 22246.

It is an arithmetic number, because the mean of its divisors is an integer number (7306845).

Almost surely, 2^83403940 is an apocalyptic number.

It is an amenable number.

83403940 is an abundant number, since it is smaller than the sum of its proper divisors (91960340).

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

83403940 is a wasteful number, since it uses less digits than its factorization.

83403940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151 (or 5149 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 83403940 is about 9132.5757593354. The cubic root of 83403940 is about 436.9135587534.

The spelling of 83403940 in words is "eighty-three million, four hundred three thousand, nine hundred forty".