3728987 has 2 divisors, whose sum is σ = 3728988. Its totient is φ = 3728986.

The previous prime is 3728983. The next prime is 3729007. The reversal of 3728987 is 7898273.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3728987 - 2² = 3728983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3728983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1864493 + 1864494.

It is an arithmetic number, because the mean of its divisors is an integer number (1864494).

Almost surely, 2^3728987 is an apocalyptic number.

3728987 is a deficient number, since it is larger than the sum of its proper divisors (1).

3728987 is an equidigital number, since it uses as much as digits as its factorization.

3728987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The square root of 3728987 is about 1931.0585180154. The cubic root of 3728987 is about 155.0708936884.

The spelling of 3728987 in words is "three million, seven hundred twenty-eight thousand, nine hundred eighty-seven".