6219491 has 4 divisors (see below), whose sum is σ = 6241752. Its totient is φ = 6197232.

The previous prime is 6219457. The next prime is 6219503. The reversal of 6219491 is 1949126.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1949126 = 2 ⋅974563.

It is a cyclic number.

It is not a de Polignac number, because 6219491 - 2²² = 2025187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6219091) 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, 10706 + ... + 11271.

It is an arithmetic number, because the mean of its divisors is an integer number (1560438).

Almost surely, 2^6219491 is an apocalyptic number.

6219491 is a deficient number, since it is larger than the sum of its proper divisors (22261).

6219491 is a wasteful number, since it uses less digits than its factorization.

6219491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22260.

The product of its digits is 3888, while the sum is 32.

The square root of 6219491 is about 2493.8907353772. The cubic root of 6219491 is about 183.9013629332.

The spelling of 6219491 in words is "six million, two hundred nineteen thousand, four hundred ninety-one".