1228877949 has 8 divisors (see below), whose sum is σ = 1764542752. Its totient is φ = 756232560.

The previous prime is 1228877941. The next prime is 1228877959. The reversal of 1228877949 is 9497788221.

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

It is not a de Polignac number, because 1228877949 - 2³ = 1228877941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228877941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15754807 + ... + 15754884.

It is an arithmetic number, because the mean of its divisors is an integer number (220567844).

Almost surely, 2^1228877949 is an apocalyptic number.

It is an amenable number.

1228877949 is a deficient number, since it is larger than the sum of its proper divisors (535664803).

1228877949 is a wasteful number, since it uses less digits than its factorization.

1228877949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31509707.

The product of its digits is 4064256, while the sum is 57.

The square root of 1228877949 is about 35055.3554966998. The cubic root of 1228877949 is about 1071.1153679291.

The spelling of 1228877949 in words is "one billion, two hundred twenty-eight million, eight hundred seventy-seven thousand, nine hundred forty-nine".