3549899 has 4 divisors (see below), whose sum is σ = 3553680. Its totient is φ = 3546120.

The previous prime is 3549881. The next prime is 3549901. The reversal of 3549899 is 9989453.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9989453 = 179 ⋅55807.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3549899 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3¹³ + 5⁹ + 4⁴ + 9³ + 8 + 9³ + 9³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3549839) 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, 722 + ... + 2760.

It is an arithmetic number, because the mean of its divisors is an integer number (888420).

Almost surely, 2^3549899 is an apocalyptic number.

3549899 is a deficient number, since it is larger than the sum of its proper divisors (3781).

3549899 is a wasteful number, since it uses less digits than its factorization.

3549899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780.

The product of its digits is 349920, while the sum is 47.

The square root of 3549899 is about 1884.1175653340. The cubic root of 3549899 is about 152.5475834672.

The spelling of 3549899 in words is "three million, five hundred forty-nine thousand, eight hundred ninety-nine".