49777779 has 8 divisors (see below), whose sum is σ = 66471120. Its totient is φ = 33134816.

The previous prime is 49777757. The next prime is 49777799. The reversal of 49777779 is 97777794.

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

It is a cyclic number.

It is not a de Polignac number, because 49777779 - 2¹² = 49773683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49777729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10224 + ... + 14285.

It is an arithmetic number, because the mean of its divisors is an integer number (8308890).

Almost surely, 2^49777779 is an apocalyptic number.

49777779 is a deficient number, since it is larger than the sum of its proper divisors (16693341).

49777779 is a wasteful number, since it uses less digits than its factorization.

49777779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25189.

The product of its digits is 5445468, while the sum is 57.

The square root of 49777779 is about 7055.3369161224. The cubic root of 49777779 is about 367.8565598615.

The spelling of 49777779 in words is "forty-nine million, seven hundred seventy-seven thousand, seven hundred seventy-nine".