49854404989 has 2 divisors, whose sum is σ = 49854404990. Its totient is φ = 49854404988.

The previous prime is 49854404959. The next prime is 49854405023. The reversal of 49854404989 is 98940445894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27112256964 + 22742148025 = 164658^2 + 150805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49854404989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49854404989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49854404909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24927202494 + 24927202495.

It is an arithmetic number, because the mean of its divisors is an integer number (24927202495).

Almost surely, 2^49854404989 is an apocalyptic number.

It is an amenable number.

49854404989 is a deficient number, since it is larger than the sum of its proper divisors (1).

49854404989 is an equidigital number, since it uses as much as digits as its factorization.

49854404989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59719680, while the sum is 64.

The spelling of 49854404989 in words is "forty-nine billion, eight hundred fifty-four million, four hundred four thousand, nine hundred eighty-nine".