49999999867 has 2 divisors, whose sum is σ = 49999999868. Its totient is φ = 49999999866.

The previous prime is 49999999853. The next prime is 49999999957. The reversal of 49999999867 is 76899999994.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49999999867 - 2¹¹ = 49999997819 is a prime.

It is not a weakly prime, because it can be changed into another prime (49999999817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24999999933 + 24999999934.

It is an arithmetic number, because the mean of its divisors is an integer number (24999999934).

Almost surely, 2^49999999867 is an apocalyptic number.

49999999867 is a deficient number, since it is larger than the sum of its proper divisors (1).

49999999867 is an equidigital number, since it uses as much as digits as its factorization.

49999999867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6428310336, while the sum is 88.

The spelling of 49999999867 in words is "forty-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred sixty-seven".