1404623641 has 2 divisors, whose sum is σ = 1404623642. Its totient is φ = 1404623640.

The previous prime is 1404623617. The next prime is 1404623651. The reversal of 1404623641 is 1463264041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1333710400 + 70913241 = 36520^2 + 8421^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404623641 - 2¹⁷ = 1404492569 is a prime.

It is not a weakly prime, because it can be changed into another prime (1404623651) 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, 702311820 + 702311821.

It is an arithmetic number, because the mean of its divisors is an integer number (702311821).

Almost surely, 2^1404623641 is an apocalyptic number.

It is an amenable number.

1404623641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404623641 is an equidigital number, since it uses as much as digits as its factorization.

1404623641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1404623641 is about 37478.3089399722. The cubic root of 1404623641 is about 1119.9191164485.

Adding to 1404623641 its reverse (1463264041), we get a palindrome (2867887682).

The spelling of 1404623641 in words is "one billion, four hundred four million, six hundred twenty-three thousand, six hundred forty-one".