200391904 has 12 divisors (see below), whose sum is σ = 394521624. Its totient is φ = 100195936.

The previous prime is 200391899. The next prime is 200391929. The reversal of 200391904 is 409193002.

It is a happy number.

200391904 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3131092 + ... + 3131155.

It is an arithmetic number, because the mean of its divisors is an integer number (32876802).

Almost surely, 2^200391904 is an apocalyptic number.

It is an amenable number.

200391904 is a deficient number, since it is larger than the sum of its proper divisors (194129720).

200391904 is an equidigital number, since it uses as much as digits as its factorization.

200391904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6262257 (or 6262249 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 200391904 is about 14155.9847414442. The cubic root of 200391904 is about 585.1852764985.

It can be divided in two parts, 200391 and 904, that added together give a triangular number (201295 = T₆₃₄).

The spelling of 200391904 in words is "two hundred million, three hundred ninety-one thousand, nine hundred four".