49728487 has 2 divisors, whose sum is σ = 49728488. Its totient is φ = 49728486.

The previous prime is 49728473. The next prime is 49728509. The reversal of 49728487 is 78482794.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49728487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49728487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49726487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24864243 + 24864244.

It is an arithmetic number, because the mean of its divisors is an integer number (24864244).

Almost surely, 2^49728487 is an apocalyptic number.

49728487 is a deficient number, since it is larger than the sum of its proper divisors (1).

49728487 is an equidigital number, since it uses as much as digits as its factorization.

49728487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 49.

The square root of 49728487 is about 7051.8428087983. The cubic root of 49728487 is about 367.7350975387.

The spelling of 49728487 in words is "forty-nine million, seven hundred twenty-eight thousand, four hundred eighty-seven".