64949849 has 4 divisors (see below), whose sum is σ = 65026320. Its totient is φ = 64873380.

The previous prime is 64949827. The next prime is 64949851. The reversal of 64949849 is 94894946.

It is a happy number.

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 64949849 - 2¹² = 64945753 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64949849.

It is not an unprimeable number, because it can be changed into a prime (64942849) 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, 36947 + ... + 38664.

It is an arithmetic number, because the mean of its divisors is an integer number (16256580).

Almost surely, 2^64949849 is an apocalyptic number.

It is an amenable number.

64949849 is a deficient number, since it is larger than the sum of its proper divisors (76471).

64949849 is an equidigital number, since it uses as much as digits as its factorization.

64949849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76470.

The product of its digits is 2239488, while the sum is 53.

The square root of 64949849 is about 8059.1469151518. The cubic root of 64949849 is about 401.9691423721.

The spelling of 64949849 in words is "sixty-four million, nine hundred forty-nine thousand, eight hundred forty-nine".