80430639 has 4 divisors (see below), whose sum is σ = 107240856. Its totient is φ = 53620424.

The previous prime is 80430593. The next prime is 80430661. The reversal of 80430639 is 93603408.

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

It is a cyclic number.

It is not a de Polignac number, because 80430639 - 2¹¹ = 80428591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80430139) 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, 13405104 + ... + 13405109.

It is an arithmetic number, because the mean of its divisors is an integer number (26810214).

Almost surely, 2^80430639 is an apocalyptic number.

80430639 is a deficient number, since it is larger than the sum of its proper divisors (26810217).

80430639 is a wasteful number, since it uses less digits than its factorization.

80430639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26810216.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 80430639 is about 8968.3130520740. The cubic root of 80430639 is about 431.6587078497.

The spelling of 80430639 in words is "eighty million, four hundred thirty thousand, six hundred thirty-nine".