1226879057 has 4 divisors (see below), whose sum is σ = 1228084080. Its totient is φ = 1225674036.

The previous prime is 1226879051. The next prime is 1226879089. The reversal of 1226879057 is 7509786221.

It is a happy number.

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 1226879057 - 2⁶ = 1226878993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226879051) 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, 600983 + ... + 603020.

It is an arithmetic number, because the mean of its divisors is an integer number (307021020).

Almost surely, 2^1226879057 is an apocalyptic number.

It is an amenable number.

1226879057 is a deficient number, since it is larger than the sum of its proper divisors (1205023).

1226879057 is a wasteful number, since it uses less digits than its factorization.

1226879057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205022.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 1226879057 is about 35026.8333852776. The cubic root of 1226879057 is about 1070.5342942579.

The spelling of 1226879057 in words is "one billion, two hundred twenty-six million, eight hundred seventy-nine thousand, fifty-seven".