404787541 has 2 divisors, whose sum is σ = 404787542. Its totient is φ = 404787540.

The previous prime is 404787479. The next prime is 404787589. The reversal of 404787541 is 145787404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401000625 + 3786916 = 20025^2 + 1946^2 .

It is a cyclic number.

It is not a de Polignac number, because 404787541 - 2⁹ = 404787029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404787494 and 404787503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404787841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202393770 + 202393771.

It is an arithmetic number, because the mean of its divisors is an integer number (202393771).

Almost surely, 2^404787541 is an apocalyptic number.

It is an amenable number.

404787541 is a deficient number, since it is larger than the sum of its proper divisors (1).

404787541 is an equidigital number, since it uses as much as digits as its factorization.

404787541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125440, while the sum is 40.

The square root of 404787541 is about 20119.3325187492. The cubic root of 404787541 is about 739.7342246199.

The spelling of 404787541 in words is "four hundred four million, seven hundred eighty-seven thousand, five hundred forty-one".