3918487 has 4 divisors (see below), whose sum is σ = 4088880. Its totient is φ = 3748096.

The previous prime is 3918443. The next prime is 3918491. The reversal of 3918487 is 7848193.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7848193 = 761 ⋅10313.

It is a 8-Lehmer number, since φ(3918487) divides (3918487-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 3918487 - 2⁷ = 3918359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3918587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85162 + ... + 85207.

It is an arithmetic number, because the mean of its divisors is an integer number (1022220).

Almost surely, 2^3918487 is an apocalyptic number.

3918487 is a deficient number, since it is larger than the sum of its proper divisors (170393).

3918487 is a wasteful number, since it uses less digits than its factorization.

3918487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170392.

The product of its digits is 48384, while the sum is 40.

The square root of 3918487 is about 1979.5168602465. The cubic root of 3918487 is about 157.6544147821.

The spelling of 3918487 in words is "three million, nine hundred eighteen thousand, four hundred eighty-seven".