3955442 has 4 divisors (see below), whose sum is σ = 5933166. Its totient is φ = 1977720.

The previous prime is 3955433. The next prime is 3955447. The reversal of 3955442 is 2445593.

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: 2445593 = 571 ⋅4283.

It can be written as a sum of positive squares in only one way, i.e., 2588881 + 1366561 = 1609^2 + 1169^2 .

It is a d-powerful number, because it can be written as 3³ + 9 + 5⁹ + 5⁹ + 4 + 4⁷ + 2¹⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 3955399 and 3955408.

It is not an unprimeable number, because it can be changed into a prime (3955447) by changing a digit.

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, 988859 + ... + 988862.

Almost surely, 2^3955442 is an apocalyptic number.

3955442 is a deficient number, since it is larger than the sum of its proper divisors (1977724).

3955442 is a wasteful number, since it uses less digits than its factorization.

3955442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977723.

The product of its digits is 21600, while the sum is 32.

The square root of 3955442 is about 1988.8293038871. The cubic root of 3955442 is about 158.1484744373.

The spelling of 3955442 in words is "three million, nine hundred fifty-five thousand, four hundred forty-two".