1226862839 has 2 divisors, whose sum is σ = 1226862840. Its totient is φ = 1226862838.

The previous prime is 1226862829. The next prime is 1226862853. The reversal of 1226862839 is 9382686221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1226862839 - 2⁴ = 1226862823 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1226862793 and 1226862802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226862829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613431419 + 613431420.

It is an arithmetic number, because the mean of its divisors is an integer number (613431420).

Almost surely, 2^1226862839 is an apocalyptic number.

1226862839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226862839 is an equidigital number, since it uses as much as digits as its factorization.

1226862839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 47.

The square root of 1226862839 is about 35026.6018762883. The cubic root of 1226862839 is about 1070.5295771394.

The spelling of 1226862839 in words is "one billion, two hundred twenty-six million, eight hundred sixty-two thousand, eight hundred thirty-nine".