49678619 has 2 divisors, whose sum is σ = 49678620. Its totient is φ = 49678618.

The previous prime is 49678613. The next prime is 49678621. The reversal of 49678619 is 91687694.

49678619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49678619 - 2¹² = 49674523 is a prime.

It is a super-2 number, since 2×49678619² = 4935930371494322, which contains 22 as substring.

Together with 49678621, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49678613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24839309 + 24839310.

It is an arithmetic number, because the mean of its divisors is an integer number (24839310).

Almost surely, 2^49678619 is an apocalyptic number.

49678619 is a deficient number, since it is larger than the sum of its proper divisors (1).

49678619 is an equidigital number, since it uses as much as digits as its factorization.

49678619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 49678619 is about 7048.3061085625. The cubic root of 49678619 is about 367.6121341680.

The spelling of 49678619 in words is "forty-nine million, six hundred seventy-eight thousand, six hundred nineteen".