80387964 has 60 divisors (see below), whose sum is σ = 211268904. Its totient is φ = 26653536.

The previous prime is 80387963. The next prime is 80387969. The reversal of 80387964 is 46978308.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80387963) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 73002 + ... + 74094.

Almost surely, 2^80387964 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 80387964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105634452).

80387964 is an abundant number, since it is smaller than the sum of its proper divisors (130880940).

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

80387964 is a wasteful number, since it uses less digits than its factorization.

80387964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 80387964 is about 8965.9335264098. The cubic root of 80387964 is about 431.5823509850.

The spelling of 80387964 in words is "eighty million, three hundred eighty-seven thousand, nine hundred sixty-four".