49127993 has 4 divisors (see below), whose sum is σ = 49562868. Its totient is φ = 48693120.

The previous prime is 49127989. The next prime is 49127999. The reversal of 49127993 is 39972194.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3794704 + 45333289 = 1948^2 + 6733^2 .

It is a cyclic number.

It is not a de Polignac number, because 49127993 - 2² = 49127989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49127999) 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, 217268 + ... + 217493.

It is an arithmetic number, because the mean of its divisors is an integer number (12390717).

Almost surely, 2^49127993 is an apocalyptic number.

It is an amenable number.

49127993 is a deficient number, since it is larger than the sum of its proper divisors (434875).

49127993 is a wasteful number, since it uses less digits than its factorization.

49127993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434874.

The product of its digits is 122472, while the sum is 44.

The square root of 49127993 is about 7009.1363947351. The cubic root of 49127993 is about 366.2489099821.

The spelling of 49127993 in words is "forty-nine million, one hundred twenty-seven thousand, nine hundred ninety-three".