80449613 has 4 divisors (see below), whose sum is σ = 80894268. Its totient is φ = 80004960.

The previous prime is 80449609. The next prime is 80449637. The reversal of 80449613 is 31694408.

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 1630729 + 78818884 = 1277^2 + 8878^2 .

It is a cyclic number.

It is not a de Polignac number, because 80449613 - 2² = 80449609 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 (80445613) 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, 222056 + ... + 222417.

It is an arithmetic number, because the mean of its divisors is an integer number (20223567).

Almost surely, 2^80449613 is an apocalyptic number.

It is an amenable number.

80449613 is a deficient number, since it is larger than the sum of its proper divisors (444655).

80449613 is a wasteful number, since it uses less digits than its factorization.

80449613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444654.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 80449613 is about 8969.3708252028. The cubic root of 80449613 is about 431.6926486815.

The spelling of 80449613 in words is "eighty million, four hundred forty-nine thousand, six hundred thirteen".