3916400687 has 4 divisors (see below), whose sum is σ = 4146777216. Its totient is φ = 3686024160.

The previous prime is 3916400659. The next prime is 3916400711. The reversal of 3916400687 is 7860046193.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3916400687 - 2⁶ = 3916400623 is a prime.

It is a super-2 number, since 2×3916400687² = 30676388682268143938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3916400627) 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, 115188239 + ... + 115188272.

It is an arithmetic number, because the mean of its divisors is an integer number (1036694304).

Almost surely, 2^3916400687 is an apocalyptic number.

3916400687 is a deficient number, since it is larger than the sum of its proper divisors (230376529).

3916400687 is a wasteful number, since it uses less digits than its factorization.

3916400687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230376528.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 3916400687 is about 62581.1528097717. The cubic root of 3916400687 is about 1576.2642992915.

The spelling of 3916400687 in words is "three billion, nine hundred sixteen million, four hundred thousand, six hundred eighty-seven".