3860399 has 4 divisors (see below), whose sum is σ = 3984960. Its totient is φ = 3735840.

The previous prime is 3860387. The next prime is 3860431. The reversal of 3860399 is 9930683.

It is a happy number.

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 3860399 - 2⁴ = 3860383 is a prime.

It is a super-3 number, since 3×3860399³ (a number of 21 digits) contains 333 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 (3860359) 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, 62234 + ... + 62295.

It is an arithmetic number, because the mean of its divisors is an integer number (996240).

Almost surely, 2^3860399 is an apocalyptic number.

3860399 is a deficient number, since it is larger than the sum of its proper divisors (124561).

3860399 is a wasteful number, since it uses less digits than its factorization.

3860399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124560.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 3860399 is about 1964.7898106413. The cubic root of 3860399 is about 156.8715056125.

The spelling of 3860399 in words is "three million, eight hundred sixty thousand, three hundred ninety-nine".