1400749393 has 2 divisors, whose sum is σ = 1400749394. Its totient is φ = 1400749392.

The previous prime is 1400749351. The next prime is 1400749397. The reversal of 1400749393 is 3939470041.

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., 1391886864 + 8862529 = 37308^2 + 2977^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400749393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1400749397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700374696 + 700374697.

It is an arithmetic number, because the mean of its divisors is an integer number (700374697).

Almost surely, 2^1400749393 is an apocalyptic number.

It is an amenable number.

1400749393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400749393 is an equidigital number, since it uses as much as digits as its factorization.

1400749393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 1400749393 is about 37426.5867131909. The cubic root of 1400749393 is about 1118.8885106826. Note that the first 3 decimals are identical.

The spelling of 1400749393 in words is "one billion, four hundred million, seven hundred forty-nine thousand, three hundred ninety-three".