6109440 has 144 divisors (see below), whose sum is σ = 20505408. Its totient is φ = 1548288.

The previous prime is 6109429. The next prime is 6109457. The reversal of 6109440 is 449016.

It is a super-2 number, since 2×6109440² = 74650514227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 6109440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142059 + ... + 142101.

Almost surely, 2^6109440 is an apocalyptic number.

6109440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6109440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10252704).

6109440 is an abundant number, since it is smaller than the sum of its proper divisors (14395968).

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

6109440 is a wasteful number, since it uses less digits than its factorization.

6109440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 6109440 is about 2471.7281403908. The cubic root of 6109440 is about 182.8102186142.

The spelling of 6109440 in words is "six million, one hundred nine thousand, four hundred forty".