3949427 has 4 divisors (see below), whose sum is σ = 3953640. Its totient is φ = 3945216.

The previous prime is 3949411. The next prime is 3949433. The reversal of 3949427 is 7249493.

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.

It is a cyclic number.

It is not a de Polignac number, because 3949427 - 2⁴ = 3949411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3949487) 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, 8 + ... + 2810.

It is an arithmetic number, because the mean of its divisors is an integer number (988410).

Almost surely, 2^3949427 is an apocalyptic number.

3949427 is a deficient number, since it is larger than the sum of its proper divisors (4213).

3949427 is a wasteful number, since it uses less digits than its factorization.

3949427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4212.

The product of its digits is 54432, while the sum is 38.

The square root of 3949427 is about 1987.3165324125. The cubic root of 3949427 is about 158.0682688477.

The spelling of 3949427 in words is "three million, nine hundred forty-nine thousand, four hundred twenty-seven".