1404912857 has 2 divisors, whose sum is σ = 1404912858. Its totient is φ = 1404912856.

The previous prime is 1404912851. The next prime is 1404912871. The reversal of 1404912857 is 7582194041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 906551881 + 498360976 = 30109^2 + 22324^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404912857 - 2¹⁶ = 1404847321 is a prime.

It is not a weakly prime, because it can be changed into another prime (1404912851) 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, 702456428 + 702456429.

It is an arithmetic number, because the mean of its divisors is an integer number (702456429).

Almost surely, 2^1404912857 is an apocalyptic number.

It is an amenable number.

1404912857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404912857 is an equidigital number, since it uses as much as digits as its factorization.

1404912857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 1404912857 is about 37482.1671865435. The cubic root of 1404912857 is about 1119.9959760166.

The spelling of 1404912857 in words is "one billion, four hundred four million, nine hundred twelve thousand, eight hundred fifty-seven".