49637778 has 8 divisors (see below), whose sum is σ = 99275568. Its totient is φ = 16545924.

The previous prime is 49637761. The next prime is 49637827. The reversal of 49637778 is 87773694.

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

49637778 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 49637778.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4136476 + ... + 4136487.

It is an arithmetic number, because the mean of its divisors is an integer number (12409446).

Almost surely, 2^49637778 is an apocalyptic number.

49637778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49637778 is a wasteful number, since it uses less digits than its factorization.

49637778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8272968.

The product of its digits is 1778112, while the sum is 51.

The square root of 49637778 is about 7045.4082919303. The cubic root of 49637778 is about 367.5113680597.

The spelling of 49637778 in words is "forty-nine million, six hundred thirty-seven thousand, seven hundred seventy-eight".