8249819 has 4 divisors (see below), whose sum is σ = 8684040. Its totient is φ = 7815600.

The previous prime is 8249809. The next prime is 8249827. The reversal of 8249819 is 9189428.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8249819 is a prime.

It is a super-2 number, since 2×8249819² = 136119027065522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8249809) 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, 217082 + ... + 217119.

It is an arithmetic number, because the mean of its divisors is an integer number (2171010).

Almost surely, 2^8249819 is an apocalyptic number.

8249819 is a deficient number, since it is larger than the sum of its proper divisors (434221).

8249819 is a wasteful number, since it uses less digits than its factorization.

8249819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434220.

The product of its digits is 41472, while the sum is 41.

The square root of 8249819 is about 2872.2498150405. The cubic root of 8249819 is about 202.0605233144.

The spelling of 8249819 in words is "eight million, two hundred forty-nine thousand, eight hundred nineteen".