309401326049 has 2 divisors, whose sum is σ = 309401326050. Its totient is φ = 309401326048.

The previous prime is 309401326043. The next prime is 309401326081. The reversal of 309401326049 is 940623104903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221871145024 + 87530181025 = 471032^2 + 295855^2 .

It is a cyclic number.

It is not a de Polignac number, because 309401326049 - 2⁴ = 309401326033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 309401325997 and 309401326015.

It is not a weakly prime, because it can be changed into another prime (309401326043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154700663024 + 154700663025.

It is an arithmetic number, because the mean of its divisors is an integer number (154700663025).

Almost surely, 2^309401326049 is an apocalyptic number.

It is an amenable number.

309401326049 is a deficient number, since it is larger than the sum of its proper divisors (1).

309401326049 is an equidigital number, since it uses as much as digits as its factorization.

309401326049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 309401326049 in words is "three hundred nine billion, four hundred one million, three hundred twenty-six thousand, forty-nine".