49040239 has 2 divisors, whose sum is σ = 49040240. Its totient is φ = 49040238.

The previous prime is 49040237. The next prime is 49040261. The reversal of 49040239 is 93204094.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49040239 - 2¹ = 49040237 is a prime.

Together with 49040237, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49040239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49040237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24520119 + 24520120.

It is an arithmetic number, because the mean of its divisors is an integer number (24520120).

Almost surely, 2^49040239 is an apocalyptic number.

49040239 is a deficient number, since it is larger than the sum of its proper divisors (1).

49040239 is an equidigital number, since it uses as much as digits as its factorization.

49040239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 49040239 is about 7002.8736244488. The cubic root of 49040239 is about 366.0307114882.

The spelling of 49040239 in words is "forty-nine million, forty thousand, two hundred thirty-nine".