49727977 has 4 divisors (see below), whose sum is σ = 53553220. Its totient is φ = 45902736.

The previous prime is 49727971. The next prime is 49727981. The reversal of 49727977 is 77972794.

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 19927296 + 29800681 = 4464^2 + 5459^2 .

It is a cyclic number.

It is not a de Polignac number, because 49727977 - 2³ = 49727969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49727971) 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, 1912602 + ... + 1912627.

It is an arithmetic number, because the mean of its divisors is an integer number (13388305).

Almost surely, 2^49727977 is an apocalyptic number.

It is an amenable number.

49727977 is a deficient number, since it is larger than the sum of its proper divisors (3825243).

49727977 is a wasteful number, since it uses less digits than its factorization.

49727977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825242.

The product of its digits is 1555848, while the sum is 52.

The square root of 49727977 is about 7051.8066479449. The cubic root of 49727977 is about 367.7338404086.

The spelling of 49727977 in words is "forty-nine million, seven hundred twenty-seven thousand, nine hundred seventy-seven".