4139668 has 12 divisors (see below), whose sum is σ = 7801780. Its totient is φ = 1910592.

The previous prime is 4139659. The next prime is 4139677. The reversal of 4139668 is 8669314.

It is an interprime number because it is at equal distance from previous prime (4139659) and next prime (4139677).

It can be written as a sum of positive squares in 2 ways, for example, as 1774224 + 2365444 = 1332^2 + 1538^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39753 + ... + 39856.

Almost surely, 2^4139668 is an apocalyptic number.

It is an amenable number.

4139668 is a deficient number, since it is larger than the sum of its proper divisors (3662112).

4139668 is a wasteful number, since it uses less digits than its factorization.

4139668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79626 (or 79624 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 4139668 is about 2034.6174087528. The cubic root of 4139668 is about 160.5665850156.

The spelling of 4139668 in words is "four million, one hundred thirty-nine thousand, six hundred sixty-eight".