1226926997 has 2 divisors, whose sum is σ = 1226926998. Its totient is φ = 1226926996.

The previous prime is 1226926979. The next prime is 1226927029. The reversal of 1226926997 is 7996296221.

Together with previous prime (1226926979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1221572401 + 5354596 = 34951^2 + 2314^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226926997 - 2⁶ = 1226926933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226920997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613463498 + 613463499.

It is an arithmetic number, because the mean of its divisors is an integer number (613463499).

Almost surely, 2^1226926997 is an apocalyptic number.

It is an amenable number.

1226926997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226926997 is an equidigital number, since it uses as much as digits as its factorization.

1226926997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 53.

The square root of 1226926997 is about 35027.5177110797. The cubic root of 1226926997 is about 1070.5482376985.

The spelling of 1226926997 in words is "one billion, two hundred twenty-six million, nine hundred twenty-six thousand, nine hundred ninety-seven".