6249891 has 4 divisors (see below), whose sum is σ = 8333192. Its totient is φ = 4166592.

The previous prime is 6249889. The next prime is 6249899. The reversal of 6249891 is 1989426.

6249891 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6249891 - 2¹ = 6249889 is a prime.

It is a super-2 number, since 2×6249891² = 78122275023762, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6249899) 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, 1041646 + ... + 1041651.

It is an arithmetic number, because the mean of its divisors is an integer number (2083298).

Almost surely, 2^6249891 is an apocalyptic number.

6249891 is a deficient number, since it is larger than the sum of its proper divisors (2083301).

6249891 is a wasteful number, since it uses less digits than its factorization.

6249891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083300.

The product of its digits is 31104, while the sum is 39.

The square root of 6249891 is about 2499.9781999050. The cubic root of 6249891 is about 184.2005041006.

It can be divided in two parts, 6249 and 891, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 6249891 in words is "six million, two hundred forty-nine thousand, eight hundred ninety-one".