3903987 has 8 divisors (see below), whose sum is σ = 5479360. Its totient is φ = 2465640.

The previous prime is 3903973. The next prime is 3904001. The reversal of 3903987 is 7893093.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3903973) and next prime (3904001).

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

It is a de Polignac number, because none of the positive numbers 2^k-3903987 is a prime.

It is a super-3 number, since 3×3903987³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3903917) 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, 34189 + ... + 34302.

It is an arithmetic number, because the mean of its divisors is an integer number (684920).

Almost surely, 2^3903987 is an apocalyptic number.

3903987 is a deficient number, since it is larger than the sum of its proper divisors (1575373).

3903987 is a wasteful number, since it uses less digits than its factorization.

3903987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68513.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 3903987 is about 1975.8509559175. The cubic root of 3903987 is about 157.4597125477.

The spelling of 3903987 in words is "three million, nine hundred three thousand, nine hundred eighty-seven".