80444429 has 4 divisors (see below), whose sum is σ = 86632476. Its totient is φ = 74256384.

The previous prime is 80444387. The next prime is 80444431. The reversal of 80444429 is 92444408.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35581225 + 44863204 = 5965^2 + 6698^2 .

It is a cyclic number.

It is not a de Polignac number, because 80444429 - 2¹² = 80440333 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 (80444449) 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, 3094004 + ... + 3094029.

It is an arithmetic number, because the mean of its divisors is an integer number (21658119).

Almost surely, 2^80444429 is an apocalyptic number.

It is an amenable number.

80444429 is a deficient number, since it is larger than the sum of its proper divisors (6188047).

80444429 is a wasteful number, since it uses less digits than its factorization.

80444429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6188046.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 80444429 is about 8969.0818370667. The cubic root of 80444429 is about 431.6833760338.

The spelling of 80444429 in words is "eighty million, four hundred forty-four thousand, four hundred twenty-nine".