49649639 has 16 divisors (see below), whose sum is σ = 56891520. Its totient is φ = 42923520.

The previous prime is 49649627. The next prime is 49649651. The reversal of 49649639 is 93694694.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (49649627) and next prime (49649651).

It is a cyclic number.

It is not a de Polignac number, because 49649639 - 2⁴ = 49649623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49649839) 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, 59477 + ... + 60305.

It is an arithmetic number, because the mean of its divisors is an integer number (3555720).

Almost surely, 2^49649639 is an apocalyptic number.

49649639 is a deficient number, since it is larger than the sum of its proper divisors (7241881).

49649639 is a wasteful number, since it uses less digits than its factorization.

49649639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130.

The product of its digits is 1259712, while the sum is 50.

The square root of 49649639 is about 7046.2499955650. The cubic root of 49649639 is about 367.5406381395.

The spelling of 49649639 in words is "forty-nine million, six hundred forty-nine thousand, six hundred thirty-nine".