3949455 has 16 divisors (see below), whose sum is σ = 6348384. Its totient is φ = 2096640.

The previous prime is 3949453. The next prime is 3949459. The reversal of 3949455 is 5549493.

3949455 is a nontrivial binomial coefficient, being equal to C(2811, 2).

It is not a de Polignac number, because 3949455 - 2¹ = 3949453 is a prime.

3949455 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3747 + ... + 4683.

It is an arithmetic number, because the mean of its divisors is an integer number (396774).

Almost surely, 2^3949455 is an apocalyptic number.

3949455 is the 2810-th triangular number.

3949455 is a deficient number, since it is larger than the sum of its proper divisors (2398929).

3949455 is a wasteful number, since it uses less digits than its factorization.

3949455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226.

The product of its digits is 97200, while the sum is 39.

The square root of 3949455 is about 1987.3235770755. The cubic root of 3949455 is about 158.0686423956.

It can be divided in two parts, 39 and 49455, that added together give a palindrome (49494).

The spelling of 3949455 in words is "three million, nine hundred forty-nine thousand, four hundred fifty-five".