80442019 has 4 divisors (see below), whose sum is σ = 91933744. Its totient is φ = 68950296.

The previous prime is 80442013. The next prime is 80442031. The reversal of 80442019 is 91024408.

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 80442019 - 2¹³ = 80433827 is a prime.

It is a super-2 number, since 2×80442019² = 12941836841592722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80442013) 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, 5745852 + ... + 5745865.

It is an arithmetic number, because the mean of its divisors is an integer number (22983436).

Almost surely, 2^80442019 is an apocalyptic number.

80442019 is a deficient number, since it is larger than the sum of its proper divisors (11491725).

80442019 is a wasteful number, since it uses less digits than its factorization.

80442019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11491724.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 80442019 is about 8968.9474856306. The cubic root of 80442019 is about 431.6790651186.

The spelling of 80442019 in words is "eighty million, four hundred forty-two thousand, nineteen".