404693 has 2 divisors, whose sum is σ = 404694. Its totient is φ = 404692.

The previous prime is 404671. The next prime is 404699. The reversal of 404693 is 396404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357604 + 47089 = 598^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 404693 - 2¹² = 400597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202346 + 202347.

It is an arithmetic number, because the mean of its divisors is an integer number (202347).

2⁴⁰⁴⁶⁹³ is an apocalyptic number.

It is an amenable number.

404693 is a deficient number, since it is larger than the sum of its proper divisors (1).

404693 is an equidigital number, since it uses as much as digits as its factorization.

404693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 404693 is about 636.1548553615. The cubic root of 404693 is about 73.9676630078.

It can be divided in two parts, 4046 and 93, that multiplied together give a triangular number (376278 = T₈₆₇).

The spelling of 404693 in words is "four hundred four thousand, six hundred ninety-three".