80403919 has 4 divisors (see below), whose sum is σ = 80450944. Its totient is φ = 80356896.

The previous prime is 80403901. The next prime is 80403971. The reversal of 80403919 is 91930408.

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 80403919 - 2¹³ = 80395727 is a prime.

It is a super-2 number, since 2×80403919² = 12929580381117122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80403019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20847 + ... + 24400.

It is an arithmetic number, because the mean of its divisors is an integer number (20112736).

Almost surely, 2^80403919 is an apocalyptic number.

80403919 is a deficient number, since it is larger than the sum of its proper divisors (47025).

80403919 is a wasteful number, since it uses less digits than its factorization.

80403919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47024.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 80403919 is about 8966.8232390295. The cubic root of 80403919 is about 431.6109018632.

The spelling of 80403919 in words is "eighty million, four hundred three thousand, nine hundred nineteen".