49143649 has 4 divisors (see below), whose sum is σ = 50728960. Its totient is φ = 47558340.

The previous prime is 49143643. The next prime is 49143691. The reversal of 49143649 is 94634194.

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: 94634194 = 2 ⋅47317097.

It is not a de Polignac number, because 49143649 - 2³ = 49143641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49143641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792609 + ... + 792670.

It is an arithmetic number, because the mean of its divisors is an integer number (12682240).

Almost surely, 2^49143649 is an apocalyptic number.

It is an amenable number.

49143649 is a deficient number, since it is larger than the sum of its proper divisors (1585311).

49143649 is a wasteful number, since it uses less digits than its factorization.

49143649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585310.

The product of its digits is 93312, while the sum is 40.

The square root of 49143649 is about 7010.2531338034. The cubic root of 49143649 is about 366.2878109806.

The spelling of 49143649 in words is "forty-nine million, one hundred forty-three thousand, six hundred forty-nine".