6149440 has 56 divisors (see below), whose sum is σ = 15983712. Its totient is φ = 2234880.

The previous prime is 6149417. The next prime is 6149443. The reversal of 6149440 is 449416.

6149440 = 307² + 308² + ... + 361².

It is a super-2 number, since 2×6149440² = 75631224627200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6149399 and 6149408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6149443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2647 + ... + 4393.

Almost surely, 2^6149440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6149440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7991856).

6149440 is an abundant number, since it is smaller than the sum of its proper divisors (9834272).

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

6149440 is a wasteful number, since it uses less digits than its factorization.

6149440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775 (or 1765 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 6149440 is about 2479.8064440597. The cubic root of 6149440 is about 183.2083188127.

The spelling of 6149440 in words is "six million, one hundred forty-nine thousand, four hundred forty".