404290477 has 2 divisors, whose sum is σ = 404290478. Its totient is φ = 404290476.

The previous prime is 404290457. The next prime is 404290501. The reversal of 404290477 is 774092404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214153956 + 190136521 = 14634^2 + 13789^2 .

It is a cyclic number.

It is not a de Polignac number, because 404290477 - 2⁷ = 404290349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404290457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202145238 + 202145239.

It is an arithmetic number, because the mean of its divisors is an integer number (202145239).

Almost surely, 2^404290477 is an apocalyptic number.

It is an amenable number.

404290477 is a deficient number, since it is larger than the sum of its proper divisors (1).

404290477 is an equidigital number, since it uses as much as digits as its factorization.

404290477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 404290477 is about 20106.9758292986. The cubic root of 404290477 is about 739.4313119201.

The spelling of 404290477 in words is "four hundred four million, two hundred ninety thousand, four hundred seventy-seven".