1400216393 has 2 divisors, whose sum is σ = 1400216394. Its totient is φ = 1400216392.

The previous prime is 1400216371. The next prime is 1400216413. The reversal of 1400216393 is 3936120041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1319360329 + 80856064 = 36323^2 + 8992^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400216393 - 2⁸ = 1400216137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1400212393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700108196 + 700108197.

It is an arithmetic number, because the mean of its divisors is an integer number (700108197).

Almost surely, 2^1400216393 is an apocalyptic number.

It is an amenable number.

1400216393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400216393 is an equidigital number, since it uses as much as digits as its factorization.

1400216393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 1400216393 is about 37419.4654291052. The cubic root of 1400216393 is about 1118.7465763635.

The spelling of 1400216393 in words is "one billion, four hundred million, two hundred sixteen thousand, three hundred ninety-three".