990429404 has 24 divisors (see below), whose sum is σ = 1809715488. Its totient is φ = 473394240.

The previous prime is 990429403. The next prime is 990429409. The reversal of 990429404 is 404924099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990429403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279854 + ... + 283370.

It is an arithmetic number, because the mean of its divisors is an integer number (75404812).

Almost surely, 2^990429404 is an apocalyptic number.

It is an amenable number.

990429404 is a deficient number, since it is larger than the sum of its proper divisors (819286084).

990429404 is a wasteful number, since it uses less digits than its factorization.

990429404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6605 (or 6603 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 990429404 is about 31471.0883828316. The cubic root of 990429404 is about 996.7995695051.

The spelling of 990429404 in words is "nine hundred ninety million, four hundred twenty-nine thousand, four hundred four".