83789040 has 40 divisors (see below), whose sum is σ = 259746768. Its totient is φ = 22343680.

The previous prime is 83789029. The next prime is 83789099. The reversal of 83789040 is 4098738.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 83789040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174321 + ... + 174800.

Almost surely, 2^83789040 is an apocalyptic number.

83789040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83789040 is an abundant number, since it is smaller than the sum of its proper divisors (175957728).

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

83789040 is a wasteful number, since it uses less digits than its factorization.

83789040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349137 (or 349131 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 83789040 is about 9153.6353434032. The cubic root of 83789040 is about 437.5849783230.

The spelling of 83789040 in words is "eighty-three million, seven hundred eighty-nine thousand, forty".