4009398 has 24 divisors (see below), whose sum is σ = 8200248. Its totient is φ = 1306752.

The previous prime is 4009391. The next prime is 4009409. The reversal of 4009398 is 8939004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4009391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41286 + ... + 41382.

It is an arithmetic number, because the mean of its divisors is an integer number (341677).

Almost surely, 2^4009398 is an apocalyptic number.

4009398 is an abundant number, since it is smaller than the sum of its proper divisors (4190850).

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

4009398 is an equidigital number, since it uses as much as digits as its factorization.

With its predecessor (4009397) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (268).

4009398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 4009398 is about 2002.3481215813. The cubic root of 4009398 is about 158.8643279195.

The spelling of 4009398 in words is "four million, nine thousand, three hundred ninety-eight".