49959649 has 4 divisors (see below), whose sum is σ = 50078740. Its totient is φ = 49840560.

The previous prime is 49959629. The next prime is 49959661. The reversal of 49959649 is 94695994.

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 186624 + 49773025 = 432^2 + 7055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49959649 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 49959649.

It is not an unprimeable number, because it can be changed into a prime (49959629) 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, 58914 + ... + 59755.

It is an arithmetic number, because the mean of its divisors is an integer number (12519685).

Almost surely, 2^49959649 is an apocalyptic number.

It is an amenable number.

49959649 is a deficient number, since it is larger than the sum of its proper divisors (119091).

49959649 is a wasteful number, since it uses less digits than its factorization.

49959649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119090.

The product of its digits is 3149280, while the sum is 55.

The square root of 49959649 is about 7068.2139894035. The cubic root of 49959649 is about 368.3040202894.

The spelling of 49959649 in words is "forty-nine million, nine hundred fifty-nine thousand, six hundred forty-nine".