49239287 has 2 divisors, whose sum is σ = 49239288. Its totient is φ = 49239286.

The previous prime is 49239271. The next prime is 49239331. The reversal of 49239287 is 78293294.

It is an a-pointer prime, because the next prime (49239331) can be obtained adding 49239287 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49239287 - 2⁴ = 49239271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49230287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24619643 + 24619644.

It is an arithmetic number, because the mean of its divisors is an integer number (24619644).

Almost surely, 2^49239287 is an apocalyptic number.

49239287 is a deficient number, since it is larger than the sum of its proper divisors (1).

49239287 is an equidigital number, since it uses as much as digits as its factorization.

49239287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 49239287 is about 7017.0711126509. The cubic root of 49239287 is about 366.5252667821.

The spelling of 49239287 in words is "forty-nine million, two hundred thirty-nine thousand, two hundred eighty-seven".