49749948769 has 2 divisors, whose sum is σ = 49749948770. Its totient is φ = 49749948768.

The previous prime is 49749948757. The next prime is 49749948797. The reversal of 49749948769 is 96784994794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36638553744 + 13111395025 = 191412^2 + 114505^2 .

It is a cyclic number.

It is not a de Polignac number, because 49749948769 - 2¹⁷ = 49749817697 is a prime.

It is a super-2 number, since 2×49749948769² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 49749948695 and 49749948704.

It is not a weakly prime, because it can be changed into another prime (49749948739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24874974384 + 24874974385.

It is an arithmetic number, because the mean of its divisors is an integer number (24874974385).

Almost surely, 2^49749948769 is an apocalyptic number.

It is an amenable number.

49749948769 is a deficient number, since it is larger than the sum of its proper divisors (1).

49749948769 is an equidigital number, since it uses as much as digits as its factorization.

49749948769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987614208, while the sum is 76.

The spelling of 49749948769 in words is "forty-nine billion, seven hundred forty-nine million, nine hundred forty-eight thousand, seven hundred sixty-nine".