80695439 has 4 divisors (see below), whose sum is σ = 88031400. Its totient is φ = 73359480.

The previous prime is 80695369. The next prime is 80695493. The reversal of 80695439 is 93459608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80695439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80695439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80695639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3667964 + ... + 3667985.

It is an arithmetic number, because the mean of its divisors is an integer number (22007850).

Almost surely, 2^80695439 is an apocalyptic number.

80695439 is a deficient number, since it is larger than the sum of its proper divisors (7335961).

80695439 is a wasteful number, since it uses less digits than its factorization.

80695439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7335960.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 80695439 is about 8983.0640095682. The cubic root of 80695439 is about 432.1319023805.

The spelling of 80695439 in words is "eighty million, six hundred ninety-five thousand, four hundred thirty-nine".