49890487 has 2 divisors, whose sum is σ = 49890488. Its totient is φ = 49890486.

The previous prime is 49890457. The next prime is 49890521. The reversal of 49890487 is 78409894.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49890487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49890487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49890457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24945243 + 24945244.

It is an arithmetic number, because the mean of its divisors is an integer number (24945244).

Almost surely, 2^49890487 is an apocalyptic number.

49890487 is a deficient number, since it is larger than the sum of its proper divisors (1).

49890487 is an equidigital number, since it uses as much as digits as its factorization.

49890487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 49890487 is about 7063.3198285226. The cubic root of 49890487 is about 368.1339870284.

The spelling of 49890487 in words is "forty-nine million, eight hundred ninety thousand, four hundred eighty-seven".