49993687 has 4 divisors (see below), whose sum is σ = 50488776. Its totient is φ = 49498600.

The previous prime is 49993679. The next prime is 49993721. The reversal of 49993687 is 78639994.

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 49993687 - 2³ = 49993679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49993627) 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, 247393 + ... + 247594.

It is an arithmetic number, because the mean of its divisors is an integer number (12622194).

Almost surely, 2^49993687 is an apocalyptic number.

49993687 is a deficient number, since it is larger than the sum of its proper divisors (495089).

49993687 is a wasteful number, since it uses less digits than its factorization.

49993687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495088.

The product of its digits is 2939328, while the sum is 55.

The square root of 49993687 is about 7070.6214012631. The cubic root of 49993687 is about 368.3876443509.

The spelling of 49993687 in words is "forty-nine million, nine hundred ninety-three thousand, six hundred eighty-seven".