1396840033 has 2 divisors, whose sum is σ = 1396840034. Its totient is φ = 1396840032.

The previous prime is 1396840019. The next prime is 1396840063. The reversal of 1396840033 is 3300486931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 968018769 + 428821264 = 31113^2 + 20708^2 .

It is a cyclic number.

It is not a de Polignac number, because 1396840033 - 2¹⁷ = 1396708961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1396839974 and 1396840001.

It is not a weakly prime, because it can be changed into another prime (1396840063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698420016 + 698420017.

It is an arithmetic number, because the mean of its divisors is an integer number (698420017).

Almost surely, 2^1396840033 is an apocalyptic number.

It is an amenable number.

1396840033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396840033 is an equidigital number, since it uses as much as digits as its factorization.

1396840033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 1396840033 is about 37374.3231778182. The cubic root of 1396840033 is about 1117.8466365732.

The spelling of 1396840033 in words is "one billion, three hundred ninety-six million, eight hundred forty thousand, thirty-three".