67444049 has 4 divisors (see below), whose sum is σ = 71411364. Its totient is φ = 63476736.

The previous prime is 67443973. The next prime is 67444067. The reversal of 67444049 is 94044476.

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 31360000 + 36084049 = 5600^2 + 6007^2 .

It is a cyclic number.

It is not a de Polignac number, because 67444049 - 2⁸ = 67443793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67444079) 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, 1983632 + ... + 1983665.

It is an arithmetic number, because the mean of its divisors is an integer number (17852841).

Almost surely, 2^67444049 is an apocalyptic number.

It is an amenable number.

67444049 is a deficient number, since it is larger than the sum of its proper divisors (3967315).

67444049 is a wasteful number, since it uses less digits than its factorization.

67444049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967314.

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 67444049 is about 8212.4325872423. The cubic root of 67444049 is about 407.0501118504.

The spelling of 67444049 in words is "sixty-seven million, four hundred forty-four thousand, forty-nine".