80831439 has 40 divisors (see below), whose sum is σ = 134571360. Its totient is φ = 48009024.

The previous prime is 80831437. The next prime is 80831461. The reversal of 80831439 is 93413808.

It is not a de Polignac number, because 80831439 - 2¹ = 80831437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80831437) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29214 + ... + 31860.

It is an arithmetic number, because the mean of its divisors is an integer number (3364284).

Almost surely, 2^80831439 is an apocalyptic number.

80831439 is a deficient number, since it is larger than the sum of its proper divisors (53739921).

80831439 is a wasteful number, since it uses less digits than its factorization.

80831439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701 (or 2692 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 80831439 is about 8990.6306230431. The cubic root of 80831439 is about 432.3745305240.

The spelling of 80831439 in words is "eighty million, eight hundred thirty-one thousand, four hundred thirty-nine".