404651 has 8 divisors (see below), whose sum is σ = 461664. Its totient is φ = 351360.

The previous prime is 404597. The next prime is 404671. The reversal of 404651 is 156404.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695 + ... + 1136.

It is an arithmetic number, because the mean of its divisors is an integer number (57708).

2⁴⁰⁴⁶⁵¹ is an apocalyptic number.

404651 is a deficient number, since it is larger than the sum of its proper divisors (57013).

404651 is a wasteful number, since it uses less digits than its factorization.

404651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 404651 is about 636.1218436746. The cubic root of 404651 is about 73.9651040728.

The spelling of 404651 in words is "four hundred four thousand, six hundred fifty-one".