49787879 has 4 divisors (see below), whose sum is σ = 49819584. Its totient is φ = 49756176.

The previous prime is 49787873. The next prime is 49787887. The reversal of 49787879 is 97878794.

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

It is a cyclic number.

It is not a de Polignac number, because 49787879 - 2⁸ = 49787623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49787873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13367 + ... + 16680.

It is an arithmetic number, because the mean of its divisors is an integer number (12454896).

Almost surely, 2^49787879 is an apocalyptic number.

49787879 is a deficient number, since it is larger than the sum of its proper divisors (31705).

49787879 is a wasteful number, since it uses less digits than its factorization.

49787879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31704.

The product of its digits is 7112448, while the sum is 59.

The square root of 49787879 is about 7056.0526500303. The cubic root of 49787879 is about 367.8814377627.

The spelling of 49787879 in words is "forty-nine million, seven hundred eighty-seven thousand, eight hundred seventy-nine".