49448639 has 2 divisors, whose sum is σ = 49448640. Its totient is φ = 49448638.

The previous prime is 49448617. The next prime is 49448647. The reversal of 49448639 is 93684494.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49448639 - 2²⁴ = 32671423 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 49448593 and 49448602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49448669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24724319 + 24724320.

It is an arithmetic number, because the mean of its divisors is an integer number (24724320).

Almost surely, 2^49448639 is an apocalyptic number.

49448639 is a deficient number, since it is larger than the sum of its proper divisors (1).

49448639 is an equidigital number, since it uses as much as digits as its factorization.

49448639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 47.

The square root of 49448639 is about 7031.9726250889. The cubic root of 49448639 is about 367.0439874318.

The spelling of 49448639 in words is "forty-nine million, four hundred forty-eight thousand, six hundred thirty-nine".