49878379 has 2 divisors, whose sum is σ = 49878380. Its totient is φ = 49878378.

The previous prime is 49878373. The next prime is 49878397. The reversal of 49878379 is 97387894.

Together with next prime (49878397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49878379 - 2⁷ = 49878251 is a prime.

It is not a weakly prime, because it can be changed into another prime (49878373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24939189 + 24939190.

It is an arithmetic number, because the mean of its divisors is an integer number (24939190).

Almost surely, 2^49878379 is an apocalyptic number.

49878379 is a deficient number, since it is larger than the sum of its proper divisors (1).

49878379 is an equidigital number, since it uses as much as digits as its factorization.

49878379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 55.

The square root of 49878379 is about 7062.4626724677. The cubic root of 49878379 is about 368.1042036153.

It can be divided in two parts, 4987 and 8379, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 49878379 in words is "forty-nine million, eight hundred seventy-eight thousand, three hundred seventy-nine".