1226177047 has 4 divisors (see below), whose sum is σ = 1231578936. Its totient is φ = 1220775160.

The previous prime is 1226177039. The next prime is 1226177107. The reversal of 1226177047 is 7407716221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7407716221 = 17 ⋅435748013.

It is a cyclic number.

It is not a de Polignac number, because 1226177047 - 2³ = 1226177039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1226176997 and 1226177015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226177347) 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, 2700604 + ... + 2701057.

It is an arithmetic number, because the mean of its divisors is an integer number (307894734).

Almost surely, 2^1226177047 is an apocalyptic number.

1226177047 is a deficient number, since it is larger than the sum of its proper divisors (5401889).

1226177047 is an equidigital number, since it uses as much as digits as its factorization.

1226177047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5401888.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 1226177047 is about 35016.8109198996. The cubic root of 1226177047 is about 1070.3300716928.

The spelling of 1226177047 in words is "one billion, two hundred twenty-six million, one hundred seventy-seven thousand, forty-seven".