227249819 has 4 divisors (see below), whose sum is σ = 233391744. Its totient is φ = 221107896.

The previous prime is 227249801. The next prime is 227249831. The reversal of 227249819 is 918942722.

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-227249819 is a prime.

It is a super-2 number, since 2×227249819² = 103284960471065522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 227249819.

It is not an unprimeable number, because it can be changed into a prime (227249879) 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, 3070907 + ... + 3070980.

It is an arithmetic number, because the mean of its divisors is an integer number (58347936).

Almost surely, 2^227249819 is an apocalyptic number.

227249819 is a deficient number, since it is larger than the sum of its proper divisors (6141925).

227249819 is an equidigital number, since it uses as much as digits as its factorization.

227249819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6141924.

The product of its digits is 145152, while the sum is 44.

The square root of 227249819 is about 15074.8074282891. The cubic root of 227249819 is about 610.2407175014.

The spelling of 227249819 in words is "two hundred twenty-seven million, two hundred forty-nine thousand, eight hundred nineteen".