4098440 has 16 divisors (see below), whose sum is σ = 9221580. Its totient is φ = 1639360.

The previous prime is 4098427. The next prime is 4098449. The reversal of 4098440 is 448904.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3541924 + 556516 = 1882^2 + 746^2 .

It is not an unprimeable number, because it can be changed into a prime (4098449) 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, 51191 + ... + 51270.

Almost surely, 2^4098440 is an apocalyptic number.

4098440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4098440 is an abundant number, since it is smaller than the sum of its proper divisors (5123140).

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

4098440 is a wasteful number, since it uses less digits than its factorization.

4098440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102472 (or 102468 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 4098440 is about 2024.4604219396. The cubic root of 4098440 is about 160.0317645268.

The spelling of 4098440 in words is "four million, ninety-eight thousand, four hundred forty".