49942649 has 4 divisors (see below), whose sum is σ = 49995264. Its totient is φ = 49890036.

The previous prime is 49942631. The next prime is 49942661. The reversal of 49942649 is 94624994.

It is a happy number.

49942649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94624994 = 2 ⋅47312497.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49942649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49942609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24857 + ... + 26790.

It is an arithmetic number, because the mean of its divisors is an integer number (12498816).

Almost surely, 2^49942649 is an apocalyptic number.

It is an amenable number.

49942649 is a deficient number, since it is larger than the sum of its proper divisors (52615).

49942649 is an equidigital number, since it uses as much as digits as its factorization.

49942649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52614.

The product of its digits is 559872, while the sum is 47.

The square root of 49942649 is about 7067.0113202117. The cubic root of 49942649 is about 368.2622407148.

The spelling of 49942649 in words is "forty-nine million, nine hundred forty-two thousand, six hundred forty-nine".