3955428 has 18 divisors (see below), whose sum is σ = 9998534. Its totient is φ = 1318464.

The previous prime is 3955421. The next prime is 3955429. The reversal of 3955428 is 8245593.

It can be written as a sum of positive squares in only one way, i.e., 2683044 + 1272384 = 1638^2 + 1128^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 109873 = 3955428 / (3 + 9 + 5 + 5 + 4 + 2 + 8).

It is a d-powerful number, because it can be written as 3² + 9 + 5⁹ + 5⁹ + 4⁷ + 2¹⁵ + 8 .

It is a junction number, because it is equal to n+sod(n) for n = 3955392 and 3955401.

It is not an unprimeable number, because it can be changed into a prime (3955421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54901 + ... + 54972.

Almost surely, 2^3955428 is an apocalyptic number.

It is an amenable number.

3955428 is an abundant number, since it is smaller than the sum of its proper divisors (6043106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3955428 is a wasteful number, since it uses less digits than its factorization.

3955428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109883 (or 109878 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 3955428 is about 1988.8257842255. The cubic root of 3955428 is about 158.1482878521.

The spelling of 3955428 in words is "three million, nine hundred fifty-five thousand, four hundred twenty-eight".