49668187 has 4 divisors (see below), whose sum is σ = 49734216. Its totient is φ = 49602160.

The previous prime is 49668173. The next prime is 49668191. The reversal of 49668187 is 78186694.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78186694 = 2 ⋅39093347.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49668187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49668187.

It is not an unprimeable number, because it can be changed into a prime (49668167) 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, 31873 + ... + 33394.

It is an arithmetic number, because the mean of its divisors is an integer number (12433554).

Almost surely, 2^49668187 is an apocalyptic number.

49668187 is a deficient number, since it is larger than the sum of its proper divisors (66029).

49668187 is an equidigital number, since it uses as much as digits as its factorization.

49668187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66028.

The product of its digits is 580608, while the sum is 49.

The square root of 49668187 is about 7047.5660337453. The cubic root of 49668187 is about 367.5864007752.

The spelling of 49668187 in words is "forty-nine million, six hundred sixty-eight thousand, one hundred eighty-seven".