3999677 has 8 divisors (see below), whose sum is σ = 4553280. Its totient is φ = 3477760.

The previous prime is 3999661. The next prime is 3999683. The reversal of 3999677 is 7769993.

It is a happy number.

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

It is not a de Polignac number, because 3999677 - 2⁴ = 3999661 is a prime.

It is a super-2 number, since 2×3999677² = 31994832208658, 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 (3999637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7652 + ... + 8157.

It is an arithmetic number, because the mean of its divisors is an integer number (569160).

Almost surely, 2^3999677 is an apocalyptic number.

It is an amenable number.

3999677 is a deficient number, since it is larger than the sum of its proper divisors (553603).

3999677 is a wasteful number, since it uses less digits than its factorization.

3999677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15843.

The product of its digits is 642978, while the sum is 50.

The square root of 3999677 is about 1999.9192483698. The cubic root of 3999677 is about 158.7358323273.

The spelling of 3999677 in words is "three million, nine hundred ninety-nine thousand, six hundred seventy-seven".