1085435440 has 40 divisors (see below), whose sum is σ = 2527681968. Its totient is φ = 433478400.

The previous prime is 1085435413. The next prime is 1085435459. The reversal of 1085435440 is 445345801.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1085435396 and 1085435405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40890 + ... + 61990.

Almost surely, 2^1085435440 is an apocalyptic number.

1085435440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1085435440 is an abundant number, since it is smaller than the sum of its proper divisors (1442246528).

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

1085435440 is a wasteful number, since it uses less digits than its factorization.

1085435440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21757 (or 21751 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 1085435440 is about 32945.9472469680. The cubic root of 1085435440 is about 1027.7038870169.

The spelling of 1085435440 in words is "one billion, eighty-five million, four hundred thirty-five thousand, four hundred forty".