49977993 has 16 divisors (see below), whose sum is σ = 73120320. Its totient is φ = 30174144.

The previous prime is 49977959. The next prime is 49978001. The reversal of 49977993 is 39977994.

It is not a de Polignac number, because 49977993 - 2¹⁴ = 49961609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49977953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10023 + ... + 14156.

It is an arithmetic number, because the mean of its divisors is an integer number (4570020).

Almost surely, 2^49977993 is an apocalyptic number.

It is an amenable number.

49977993 is a deficient number, since it is larger than the sum of its proper divisors (23142327).

49977993 is a wasteful number, since it uses less digits than its factorization.

49977993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24248.

The product of its digits is 3857868, while the sum is 57.

The square root of 49977993 is about 7069.5115107057. The cubic root of 49977993 is about 368.3490922782.

Subtracting from 49977993 its reverse (39977994), we obtain a palindrome (9999999).

The spelling of 49977993 in words is "forty-nine million, nine hundred seventy-seven thousand, nine hundred ninety-three".