80439750 has 128 divisors (see below), whose sum is σ = 236545920. Its totient is φ = 20160000.

The previous prime is 80439703. The next prime is 80439757. The reversal of 80439750 is 5793408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80439757) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114400 + ... + 115100.

It is an arithmetic number, because the mean of its divisors is an integer number (1848015).

Almost surely, 2^80439750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80439750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118272960).

80439750 is an abundant number, since it is smaller than the sum of its proper divisors (156106170).

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

80439750 is a wasteful number, since it uses less digits than its factorization.

80439750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 80439750 is about 8968.8209927504. The cubic root of 80439750 is about 431.6750063401.

The spelling of 80439750 in words is "eighty million, four hundred thirty-nine thousand, seven hundred fifty".