49784857 has 16 divisors (see below), whose sum is σ = 55423872. Its totient is φ = 44478720.

The previous prime is 49784837. The next prime is 49784863. The reversal of 49784857 is 75848794.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49784857 is a prime.

It is a Duffinian number.

Its product of digits (2257920) is a multiple of the sum of its prime divisors (1008).

It is not an unprimeable number, because it can be changed into a prime (49784827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60982 + ... + 61792.

It is an arithmetic number, because the mean of its divisors is an integer number (3463992).

Almost surely, 2^49784857 is an apocalyptic number.

It is an amenable number.

49784857 is a deficient number, since it is larger than the sum of its proper divisors (5639015).

49784857 is a wasteful number, since it uses less digits than its factorization.

49784857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008.

The product of its digits is 2257920, while the sum is 52.

The square root of 49784857 is about 7055.8385043877. The cubic root of 49784857 is about 367.8739944504.

The spelling of 49784857 in words is "forty-nine million, seven hundred eighty-four thousand, eight hundred fifty-seven".