1226847887 has 8 divisors (see below), whose sum is σ = 1262550000. Its totient is φ = 1191279744.

The previous prime is 1226847883. The next prime is 1226847907. The reversal of 1226847887 is 7887486221.

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

It is a cyclic number.

It is not a de Polignac number, because 1226847887 - 2² = 1226847883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226847883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14762 + ... + 51687.

It is an arithmetic number, because the mean of its divisors is an integer number (157818750).

Almost surely, 2^1226847887 is an apocalyptic number.

1226847887 is a deficient number, since it is larger than the sum of its proper divisors (35702113).

1226847887 is an equidigital number, since it uses as much as digits as its factorization.

1226847887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66985.

The product of its digits is 2408448, while the sum is 53.

The square root of 1226847887 is about 35026.3884378621. The cubic root of 1226847887 is about 1070.5252282090.

The spelling of 1226847887 in words is "one billion, two hundred twenty-six million, eight hundred forty-seven thousand, eight hundred eighty-seven".