903400840 has 16 divisors (see below), whose sum is σ = 2032651980. Its totient is φ = 361360320.

The previous prime is 903400783. The next prime is 903400871. The reversal of 903400840 is 48004309.

903400840 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 796029796 + 107371044 = 28214^2 + 10362^2 .

It is a super-2 number, since 2×903400840² = 1632266155425411200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 903400799 and 903400808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11292471 + ... + 11292550.

Almost surely, 2^903400840 is an apocalyptic number.

It is an amenable number.

903400840 is an abundant number, since it is smaller than the sum of its proper divisors (1129251140).

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

903400840 is a wasteful number, since it uses less digits than its factorization.

903400840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22585032 (or 22585028 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 903400840 is about 30056.6272226276. The cubic root of 903400840 is about 966.7039578691.

The spelling of 903400840 in words is "nine hundred three million, four hundred thousand, eight hundred forty".