222691849 has 8 divisors (see below), whose sum is σ = 227116872. Its totient is φ = 218275200.

The previous prime is 222691793. The next prime is 222691867. The reversal of 222691849 is 948196222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10465225 + 212226624 = 3235^2 + 14568^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222691849 - 2²¹ = 220594697 is a prime.

It is a super-2 number, since 2×222691849² = 99183319222077602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222691349) 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, 94287 + ... + 96619.

It is an arithmetic number, because the mean of its divisors is an integer number (28389609).

Almost surely, 2^222691849 is an apocalyptic number.

It is an amenable number.

222691849 is a deficient number, since it is larger than the sum of its proper divisors (4425023).

222691849 is a wasteful number, since it uses less digits than its factorization.

222691849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4187.

The product of its digits is 124416, while the sum is 43.

The square root of 222691849 is about 14922.8632976383. The cubic root of 222691849 is about 606.1332483007.

The spelling of 222691849 in words is "two hundred twenty-two million, six hundred ninety-one thousand, eight hundred forty-nine".