6444930 has 16 divisors (see below), whose sum is σ = 15467904. Its totient is φ = 1718640.

The previous prime is 6444871. The next prime is 6444937. The reversal of 6444930 is 394446.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 214831 = 6444930 / (6 + 4 + 4 + 4 + 9 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (6444937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107386 + ... + 107445.

It is an arithmetic number, because the mean of its divisors is an integer number (966744).

Almost surely, 2^6444930 is an apocalyptic number.

6444930 is an abundant number, since it is smaller than the sum of its proper divisors (9022974).

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

6444930 is a wasteful number, since it uses less digits than its factorization.

6444930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214841.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 6444930 is about 2538.6866683386. The cubic root of 6444930 is about 186.0970126363.

The spelling of 6444930 in words is "six million, four hundred forty-four thousand, nine hundred thirty".