3949243 has 4 divisors (see below), whose sum is σ = 4045608. Its totient is φ = 3852880.

The previous prime is 3949241. The next prime is 3949247. The reversal of 3949243 is 3429493.

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 3949243 - 2¹ = 3949241 is a prime.

It is a Duffinian number.

3949243 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3949199 and 3949208.

It is not an unprimeable number, because it can be changed into a prime (3949241) 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, 48121 + ... + 48202.

It is an arithmetic number, because the mean of its divisors is an integer number (1011402).

Almost surely, 2^3949243 is an apocalyptic number.

3949243 is a deficient number, since it is larger than the sum of its proper divisors (96365).

3949243 is an equidigital number, since it uses as much as digits as its factorization.

3949243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96364.

The product of its digits is 23328, while the sum is 34.

The square root of 3949243 is about 1987.2702382917. The cubic root of 3949243 is about 158.0658140601.

The spelling of 3949243 in words is "three million, nine hundred forty-nine thousand, two hundred forty-three".