49635778 has 4 divisors (see below), whose sum is σ = 74453670. Its totient is φ = 24817888.

The previous prime is 49635763. The next prime is 49635797. The reversal of 49635778 is 87753694.

It is a happy number.

49635778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49378729 + 257049 = 7027^2 + 507^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12408943 + ... + 12408946.

Almost surely, 2^49635778 is an apocalyptic number.

49635778 is a deficient number, since it is larger than the sum of its proper divisors (24817892).

49635778 is a wasteful number, since it uses less digits than its factorization.

49635778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24817891.

The product of its digits is 1270080, while the sum is 49.

The square root of 49635778 is about 7045.2663540848. The cubic root of 49635778 is about 367.5064320839.

The spelling of 49635778 in words is "forty-nine million, six hundred thirty-five thousand, seven hundred seventy-eight".