1404542393 has 2 divisors, whose sum is σ = 1404542394. Its totient is φ = 1404542392.

The previous prime is 1404542387. The next prime is 1404542423. The reversal of 1404542393 is 3932454041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1351077049 + 53465344 = 36757^2 + 7312^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404542393 - 2⁸ = 1404542137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1404542303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702271196 + 702271197.

It is an arithmetic number, because the mean of its divisors is an integer number (702271197).

Almost surely, 2^1404542393 is an apocalyptic number.

It is an amenable number.

1404542393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404542393 is an equidigital number, since it uses as much as digits as its factorization.

1404542393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1404542393 is about 37477.2249906527. The cubic root of 1404542393 is about 1119.8975227774.

The spelling of 1404542393 in words is "one billion, four hundred four million, five hundred forty-two thousand, three hundred ninety-three".