80855449 has 4 divisors (see below), whose sum is σ = 81656100. Its totient is φ = 80054800.

The previous prime is 80855447. The next prime is 80855461. The reversal of 80855449 is 94455808.

It is a happy number.

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 37295449 + 43560000 = 6107^2 + 6600^2 .

It is a cyclic number.

It is not a de Polignac number, because 80855449 - 2¹ = 80855447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80855441) 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, 400174 + ... + 400375.

It is an arithmetic number, because the mean of its divisors is an integer number (20414025).

Almost surely, 2^80855449 is an apocalyptic number.

It is an amenable number.

80855449 is a deficient number, since it is larger than the sum of its proper divisors (800651).

80855449 is a wasteful number, since it uses less digits than its factorization.

80855449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800650.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 80855449 is about 8991.9658028709. The cubic root of 80855449 is about 432.4173368251.

The spelling of 80855449 in words is "eighty million, eight hundred fifty-five thousand, four hundred forty-nine".