4049987 has 2 divisors, whose sum is σ = 4049988. Its totient is φ = 4049986.

The previous prime is 4049977. The next prime is 4049989. The reversal of 4049987 is 7899404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4049987 - 2⁶ = 4049923 is a prime.

Together with 4049989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4049989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2024993 + 2024994.

It is an arithmetic number, because the mean of its divisors is an integer number (2024994).

Almost surely, 2^4049987 is an apocalyptic number.

4049987 is a deficient number, since it is larger than the sum of its proper divisors (1).

4049987 is an equidigital number, since it uses as much as digits as its factorization.

4049987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 4049987 is about 2012.4579498713. The cubic root of 4049987 is about 159.3986148271.

The spelling of 4049987 in words is "four million, forty-nine thousand, nine hundred eighty-seven".