3987465 has 8 divisors (see below), whose sum is σ = 6379968. Its totient is φ = 2126640.

The previous prime is 3987449. The next prime is 3987481. The reversal of 3987465 is 5647893.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3987449) and next prime (3987481).

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

It is not a de Polignac number, because 3987465 - 2⁴ = 3987449 is a prime.

3987465 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132901 + ... + 132930.

It is an arithmetic number, because the mean of its divisors is an integer number (797496).

Almost surely, 2^3987465 is an apocalyptic number.

It is an amenable number.

3987465 is a deficient number, since it is larger than the sum of its proper divisors (2392503).

3987465 is a wasteful number, since it uses less digits than its factorization.

3987465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265839.

The product of its digits is 181440, while the sum is 42.

The square root of 3987465 is about 1996.8637910484. The cubic root of 3987465 is about 158.5741144165.

The spelling of 3987465 in words is "three million, nine hundred eighty-seven thousand, four hundred sixty-five".