64489449 has 8 divisors (see below), whose sum is σ = 91044000. Its totient is φ = 40463936.

The previous prime is 64489429. The next prime is 64489463. The reversal of 64489449 is 94498446.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64489449 - 2⁸ = 64489193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64489398 and 64489407.

It is not an unprimeable number, because it can be changed into a prime (64489429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632199 + ... + 632300.

It is an arithmetic number, because the mean of its divisors is an integer number (11380500).

Almost surely, 2^64489449 is an apocalyptic number.

It is an amenable number.

64489449 is a deficient number, since it is larger than the sum of its proper divisors (26554551).

64489449 is a wasteful number, since it uses less digits than its factorization.

64489449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264519.

The product of its digits is 995328, while the sum is 48.

The square root of 64489449 is about 8030.5322986711. The cubic root of 64489449 is about 401.0170970088.

The spelling of 64489449 in words is "sixty-four million, four hundred eighty-nine thousand, four hundred forty-nine".