1398346049 has 2 divisors, whose sum is σ = 1398346050. Its totient is φ = 1398346048.

The previous prime is 1398346013. The next prime is 1398346063. The reversal of 1398346049 is 9406438931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1026049024 + 372297025 = 32032^2 + 19295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1398346049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1398345994 and 1398346012.

It is not a weakly prime, because it can be changed into another prime (1398346009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699173024 + 699173025.

It is an arithmetic number, because the mean of its divisors is an integer number (699173025).

Almost surely, 2^1398346049 is an apocalyptic number.

It is an amenable number.

1398346049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398346049 is an equidigital number, since it uses as much as digits as its factorization.

1398346049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 1398346049 is about 37394.4654862187. The cubic root of 1398346049 is about 1118.2482311766.

The spelling of 1398346049 in words is "one billion, three hundred ninety-eight million, three hundred forty-six thousand, forty-nine".