1228876277 has 4 divisors (see below), whose sum is σ = 1233218880. Its totient is φ = 1224533676.

The previous prime is 1228876261. The next prime is 1228876283. The reversal of 1228876277 is 7726788221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1228876277 - 2⁴ = 1228876261 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 (1228876217) 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, 2170877 + ... + 2171442.

It is an arithmetic number, because the mean of its divisors is an integer number (308304720).

Almost surely, 2^1228876277 is an apocalyptic number.

It is an amenable number.

1228876277 is a deficient number, since it is larger than the sum of its proper divisors (4342603).

1228876277 is an equidigital number, since it uses as much as digits as its factorization.

1228876277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342602.

The product of its digits is 1053696, while the sum is 50.

The square root of 1228876277 is about 35055.3316486950. The cubic root of 1228876277 is about 1071.1148821456.

The spelling of 1228876277 in words is "one billion, two hundred twenty-eight million, eight hundred seventy-six thousand, two hundred seventy-seven".