4029987 has 8 divisors (see below), whose sum is σ = 5786704. Its totient is φ = 2479968.

The previous prime is 4029979. The next prime is 4030007. The reversal of 4029987 is 7899204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4029987 - 2³ = 4029979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 103333 = 4029987 / (4 + 0 + 2 + 9 + 9 + 8 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4029937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51628 + ... + 51705.

It is an arithmetic number, because the mean of its divisors is an integer number (723338).

Almost surely, 2^4029987 is an apocalyptic number.

4029987 is a deficient number, since it is larger than the sum of its proper divisors (1756717).

4029987 is a wasteful number, since it uses less digits than its factorization.

4029987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103349.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 4029987 is about 2007.4827521052. The cubic root of 4029987 is about 159.1357963333.

The spelling of 4029987 in words is "four million, twenty-nine thousand, nine hundred eighty-seven".