1226829739 has 2 divisors, whose sum is σ = 1226829740. Its totient is φ = 1226829738.

The previous prime is 1226829733. The next prime is 1226829761. The reversal of 1226829739 is 9379286221.

It is a weak prime.

It is an emirp because it is prime and its reverse (9379286221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1226829739 - 2²⁷ = 1092612011 is a prime.

It is a super-2 number, since 2×1226829739² = 3010222416989616242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1226829692 and 1226829701.

It is not a weakly prime, because it can be changed into another prime (1226829733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613414869 + 613414870.

It is an arithmetic number, because the mean of its divisors is an integer number (613414870).

Almost surely, 2^1226829739 is an apocalyptic number.

1226829739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226829739 is an equidigital number, since it uses as much as digits as its factorization.

1226829739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 1226829739 is about 35026.1293750823. The cubic root of 1226829739 is about 1070.5199496444.

The spelling of 1226829739 in words is "one billion, two hundred twenty-six million, eight hundred twenty-nine thousand, seven hundred thirty-nine".