1401240493 has 2 divisors, whose sum is σ = 1401240494. Its totient is φ = 1401240492.

The previous prime is 1401240439. The next prime is 1401240499. The reversal of 1401240493 is 3940421041.

Together with previous prime (1401240439) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1165403044 + 235837449 = 34138^2 + 15357^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401240493 - 2¹⁷ = 1401109421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401240499) 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, 700620246 + 700620247.

It is an arithmetic number, because the mean of its divisors is an integer number (700620247).

Almost surely, 2^1401240493 is an apocalyptic number.

It is an amenable number.

1401240493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401240493 is an equidigital number, since it uses as much as digits as its factorization.

1401240493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1401240493 is about 37433.1469823204. The cubic root of 1401240493 is about 1119.0192554459.

The spelling of 1401240493 in words is "one billion, four hundred one million, two hundred forty thousand, four hundred ninety-three".