83009388 has 72 divisors (see below), whose sum is σ = 243341056. Its totient is φ = 21558240.

The previous prime is 83009387. The next prime is 83009411. The reversal of 83009388 is 88390038.

It is a happy number.

It is a super-2 number, since 2×83009388² = 13781116992269088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83009383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6081 + ... + 14247.

Almost surely, 2^83009388 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 83009388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121670528).

83009388 is an abundant number, since it is smaller than the sum of its proper divisors (160331668).

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

83009388 is a wasteful number, since it uses less digits than its factorization.

83009388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8203 (or 8190 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 83009388 is about 9110.9487980122. The cubic root of 83009388 is about 436.2235127582.

The spelling of 83009388 in words is "eighty-three million, nine thousand, three hundred eighty-eight".