404889780 has 24 divisors (see below), whose sum is σ = 1133691552. Its totient is φ = 107970592.

The previous prime is 404889767. The next prime is 404889781. The reversal of 404889780 is 87988404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404889781) 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, 3374022 + ... + 3374141.

It is an arithmetic number, because the mean of its divisors is an integer number (47237148).

Almost surely, 2^404889780 is an apocalyptic number.

It is an amenable number.

404889780 is an abundant number, since it is smaller than the sum of its proper divisors (728801772).

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

404889780 is a wasteful number, since it uses less digits than its factorization.

404889780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6748175 (or 6748173 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The square root of 404889780 is about 20121.8731732411. The cubic root of 404889780 is about 739.7964987047.

The spelling of 404889780 in words is "four hundred four million, eight hundred eighty-nine thousand, seven hundred eighty".