404965421 has 8 divisors (see below), whose sum is σ = 471550464. Its totient is φ = 340563600.

The previous prime is 404965403. The next prime is 404965423. The reversal of 404965421 is 124569404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404965421 - 2²⁶ = 337856557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404965423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545405 + ... + 546146.

It is an arithmetic number, because the mean of its divisors is an integer number (58943808).

Almost surely, 2^404965421 is an apocalyptic number.

It is an amenable number.

404965421 is a deficient number, since it is larger than the sum of its proper divisors (66585043).

404965421 is a wasteful number, since it uses less digits than its factorization.

404965421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091611.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 404965421 is about 20123.7526569972. The cubic root of 404965421 is about 739.8425651203.

The spelling of 404965421 in words is "four hundred four million, nine hundred sixty-five thousand, four hundred twenty-one".