404435673487 has 2 divisors, whose sum is σ = 404435673488. Its totient is φ = 404435673486.

The previous prime is 404435673409. The next prime is 404435673533. The reversal of 404435673487 is 784376534404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404435673487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404435643487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202217836743 + 202217836744.

It is an arithmetic number, because the mean of its divisors is an integer number (202217836744).

Almost surely, 2^404435673487 is an apocalyptic number.

404435673487 is a deficient number, since it is larger than the sum of its proper divisors (1).

404435673487 is an equidigital number, since it uses as much as digits as its factorization.

404435673487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27095040, while the sum is 55.

The spelling of 404435673487 in words is "four hundred four billion, four hundred thirty-five million, six hundred seventy-three thousand, four hundred eighty-seven".