49438967999 has 4 divisors (see below), whose sum is σ = 49460089080. Its totient is φ = 49417846920.

The previous prime is 49438967957. The next prime is 49438968023. The reversal of 49438967999 is 99976983494.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49438967999 - 2²⁰ = 49437919423 is a prime.

It is a super-2 number, since 2×49438967999² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49438967909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10557029 + ... + 10561710.

It is an arithmetic number, because the mean of its divisors is an integer number (12365022270).

Almost surely, 2^49438967999 is an apocalyptic number.

49438967999 is a deficient number, since it is larger than the sum of its proper divisors (21121081).

49438967999 is a wasteful number, since it uses less digits than its factorization.

49438967999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21121080.

The product of its digits is 952342272, while the sum is 77.

The spelling of 49438967999 in words is "forty-nine billion, four hundred thirty-eight million, nine hundred sixty-seven thousand, nine hundred ninety-nine".