80378269 has 4 divisors (see below), whose sum is σ = 80859744. Its totient is φ = 79896796.

The previous prime is 80378267. The next prime is 80378281. The reversal of 80378269 is 96287308.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80378269 - 2¹ = 80378267 is a prime.

It is a super-2 number, since 2×80378269² = 12921332254872722, 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 (80378267) 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, 240487 + ... + 240820.

It is an arithmetic number, because the mean of its divisors is an integer number (20214936).

Almost surely, 2^80378269 is an apocalyptic number.

It is an amenable number.

80378269 is a deficient number, since it is larger than the sum of its proper divisors (481475).

80378269 is a wasteful number, since it uses less digits than its factorization.

80378269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481474.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 80378269 is about 8965.3928525191. The cubic root of 80378269 is about 431.5650002984.

The spelling of 80378269 in words is "eighty million, three hundred seventy-eight thousand, two hundred sixty-nine".