404887746 has 16 divisors (see below), whose sum is σ = 810022464. Its totient is φ = 134921424.

The previous prime is 404887741. The next prime is 404887753. The reversal of 404887746 is 647788404.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 404887695 and 404887704.

It is not an unprimeable number, because it can be changed into a prime (404887741) 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, 16315 + ... + 32801.

It is an arithmetic number, because the mean of its divisors is an integer number (50626404).

Almost surely, 2^404887746 is an apocalyptic number.

404887746 is an abundant number, since it is smaller than the sum of its proper divisors (405134718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404887746 is a wasteful number, since it uses less digits than its factorization.

404887746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20585.

The product of its (nonzero) digits is 1204224, while the sum is 48.

The square root of 404887746 is about 20121.8226311634. The cubic root of 404887746 is about 739.7952598913.

The spelling of 404887746 in words is "four hundred four million, eight hundred eighty-seven thousand, seven hundred forty-six".