1404505397 has 2 divisors, whose sum is σ = 1404505398. Its totient is φ = 1404505396.

The previous prime is 1404505381. The next prime is 1404505423. The reversal of 1404505397 is 7935054041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 930616036 + 473889361 = 30506^2 + 21769^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404505397 - 2⁴ = 1404505381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1404505397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1404505357) 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, 702252698 + 702252699.

It is an arithmetic number, because the mean of its divisors is an integer number (702252699).

Almost surely, 2^1404505397 is an apocalyptic number.

It is an amenable number.

1404505397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404505397 is an equidigital number, since it uses as much as digits as its factorization.

1404505397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 1404505397 is about 37476.7314076348. The cubic root of 1404505397 is about 1119.8876898969.

The spelling of 1404505397 in words is "one billion, four hundred four million, five hundred five thousand, three hundred ninety-seven".