49439988292789 has 2 divisors, whose sum is σ = 49439988292790. Its totient is φ = 49439988292788.

The previous prime is 49439988292741. The next prime is 49439988292813. The reversal of 49439988292789 is 98729288993494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32032860618564 + 17407127674225 = 5659758^2 + 4172185^2 .

It is a cyclic number.

It is not a de Polignac number, because 49439988292789 - 2¹⁷ = 49439988161717 is a prime.

It is a super-2 number, since 2×49439988292789² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49439988292729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24719994146394 + 24719994146395.

It is an arithmetic number, because the mean of its divisors is an integer number (24719994146395).

Almost surely, 2^{49439988292789} is an apocalyptic number.

It is an amenable number.

49439988292789 is a deficient number, since it is larger than the sum of its proper divisors (1).

49439988292789 is an equidigital number, since it uses as much as digits as its factorization.

49439988292789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40633270272, while the sum is 91.

The spelling of 49439988292789 in words is "forty-nine trillion, four hundred thirty-nine billion, nine hundred eighty-eight million, two hundred ninety-two thousand, seven hundred eighty-nine".