4109428 has 6 divisors (see below), whose sum is σ = 7191506. Its totient is φ = 2054712.

The previous prime is 4109423. The next prime is 4109429. The reversal of 4109428 is 8249014.

It can be written as a sum of positive squares in only one way, i.e., 2155024 + 1954404 = 1468^2 + 1398^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4109396 and 4109405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4109423) 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, 513675 + ... + 513682.

Almost surely, 2^4109428 is an apocalyptic number.

It is an amenable number.

4109428 is a deficient number, since it is larger than the sum of its proper divisors (3082078).

4109428 is a wasteful number, since it uses less digits than its factorization.

4109428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027361 (or 1027359 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 4109428 is about 2027.1724149662. The cubic root of 4109428 is about 160.1746530326.

The spelling of 4109428 in words is "four million, one hundred nine thousand, four hundred twenty-eight".