3949558 has 4 divisors (see below), whose sum is σ = 5924340. Its totient is φ = 1974778.

The previous prime is 3949541. The next prime is 3949579. The reversal of 3949558 is 8559493.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8559493 = 2593 ⋅3301.

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 as a sum of consecutive naturals, namely, 987388 + ... + 987391.

It is an arithmetic number, because the mean of its divisors is an integer number (1481085).

Almost surely, 2^3949558 is an apocalyptic number.

3949558 is a deficient number, since it is larger than the sum of its proper divisors (1974782).

3949558 is a wasteful number, since it uses less digits than its factorization.

3949558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974781.

The product of its digits is 194400, while the sum is 43.

The square root of 3949558 is about 1987.3494911565. The cubic root of 3949558 is about 158.0700165033.

The spelling of 3949558 in words is "three million, nine hundred forty-nine thousand, five hundred fifty-eight".