80438999 has 8 divisors (see below), whose sum is σ = 82992000. Its totient is φ = 77906016.

The previous prime is 80438987. The next prime is 80439013. The reversal of 80438999 is 99983408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-80438999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80438929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3377 + ... + 13125.

It is an arithmetic number, because the mean of its divisors is an integer number (10374000).

Almost surely, 2^80438999 is an apocalyptic number.

80438999 is a deficient number, since it is larger than the sum of its proper divisors (2553001).

80438999 is a wasteful number, since it uses less digits than its factorization.

80438999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10009.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 80438999 is about 8968.7791253882. The cubic root of 80438999 is about 431.6736629374.

The spelling of 80438999 in words is "eighty million, four hundred thirty-eight thousand, nine hundred ninety-nine".