403890012 has 36 divisors (see below), whose sum is σ = 1081001376. Its totient is φ = 126710400.

The previous prime is 403889971. The next prime is 403890043. The reversal of 403890012 is 210098304.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 329364 + ... + 330587.

It is an arithmetic number, because the mean of its divisors is an integer number (30027816).

Almost surely, 2^403890012 is an apocalyptic number.

It is an amenable number.

403890012 is an abundant number, since it is smaller than the sum of its proper divisors (677111364).

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

403890012 is a wasteful number, since it uses less digits than its factorization.

403890012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659978 (or 659973 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 403890012 is about 20097.0150022335. The cubic root of 403890012 is about 739.1870863756.

The spelling of 403890012 in words is "four hundred three million, eight hundred ninety thousand, twelve".