49641649 has 8 divisors (see below), whose sum is σ = 54374760. Its totient is φ = 45110016.

The previous prime is 49641643. The next prime is 49641671. The reversal of 49641649 is 94614694.

It can be written as a sum of positive squares in 4 ways, for example, as 9090225 + 40551424 = 3015^2 + 6368^2 .

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 49641649 - 2¹⁷ = 49510577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49641643) 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, 49854 + ... + 50839.

It is an arithmetic number, because the mean of its divisors is an integer number (6796845).

Almost surely, 2^49641649 is an apocalyptic number.

It is an amenable number.

49641649 is a deficient number, since it is larger than the sum of its proper divisors (4733111).

49641649 is a wasteful number, since it uses less digits than its factorization.

49641649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100739.

The product of its digits is 186624, while the sum is 43.

The square root of 49641649 is about 7045.6830045071. The cubic root of 49641649 is about 367.5209212641.

The spelling of 49641649 in words is "forty-nine million, six hundred forty-one thousand, six hundred forty-nine".