3914640 has 60 divisors (see below), whose sum is σ = 13149084. Its totient is φ = 1043712.

The previous prime is 3914621. The next prime is 3914663. The reversal of 3914640 is 464193.

3914640 is a `hidden beast` number, since 3 + 9 + 14 + 640 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1806336 + 2108304 = 1344^2 + 1452^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1999 + ... + 3438.

Almost surely, 2^3914640 is an apocalyptic number.

3914640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3914640 is an abundant number, since it is smaller than the sum of its proper divisors (9234444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3914640 is a wasteful number, since it uses less digits than its factorization.

3914640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5456 (or 5447 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3914640 is about 1978.5449198843. The cubic root of 3914640 is about 157.6028051413.

It can be divided in two parts, 3914 and 640, that added together give a palindrome (4554).

The spelling of 3914640 in words is "three million, nine hundred fourteen thousand, six hundred forty".