49999993 has 4 divisors (see below), whose sum is σ = 51612928. Its totient is φ = 48387060.

The previous prime is 49999991. The next prime is 50000017. The reversal of 49999993 is 39999994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49999993 - 2¹ = 49999991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49999991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 806421 + ... + 806482.

It is an arithmetic number, because the mean of its divisors is an integer number (12903232).

Almost surely, 2^49999993 is an apocalyptic number.

It is an amenable number.

49999993 is a deficient number, since it is larger than the sum of its proper divisors (1612935).

49999993 is a wasteful number, since it uses less digits than its factorization.

49999993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612934.

The product of its digits is 6377292, while the sum is 61.

The square root of 49999993 is about 7071.0673168907. The cubic root of 49999993 is about 368.4031326719.

Subtracting from 49999993 its reverse (39999994), we obtain a palindrome (9999999).

The spelling of 49999993 in words is "forty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-three".