83471940 has 72 divisors (see below), whose sum is σ = 266535360. Its totient is φ = 21086784.

The previous prime is 83471929. The next prime is 83471957. The reversal of 83471940 is 4917438.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 83471895 and 83471904.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8784 + ... + 15623.

It is an arithmetic number, because the mean of its divisors is an integer number (3701880).

Almost surely, 2^83471940 is an apocalyptic number.

It is an amenable number.

83471940 is an abundant number, since it is smaller than the sum of its proper divisors (183063420).

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

83471940 is a wasteful number, since it uses less digits than its factorization.

83471940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24441 (or 24436 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 83471940 is about 9136.2979373486. The cubic root of 83471940 is about 437.0322663802.

The spelling of 83471940 in words is "eighty-three million, four hundred seventy-one thousand, nine hundred forty".