3899659 has 4 divisors (see below), whose sum is σ = 4034160. Its totient is φ = 3765160.

The previous prime is 3899657. The next prime is 3899699. The reversal of 3899659 is 9569983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9569983 = 83 ⋅115301.

It is a cyclic number.

It is not a de Polignac number, because 3899659 - 2¹ = 3899657 is a prime.

It is a Duffinian number.

3899659 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3899653) 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, 67207 + ... + 67264.

It is an arithmetic number, because the mean of its divisors is an integer number (1008540).

Almost surely, 2^3899659 is an apocalyptic number.

3899659 is a deficient number, since it is larger than the sum of its proper divisors (134501).

3899659 is a wasteful number, since it uses less digits than its factorization.

3899659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134500.

The product of its digits is 524880, while the sum is 49.

The square root of 3899659 is about 1974.7554278948. The cubic root of 3899659 is about 157.4015038818.

The spelling of 3899659 in words is "three million, eight hundred ninety-nine thousand, six hundred fifty-nine".