10199440 has 20 divisors (see below), whose sum is σ = 23713884. Its totient is φ = 4079744.

The previous prime is 10199437. The next prime is 10199459. The reversal of 10199440 is 4499101.

It can be written as a sum of positive squares in 2 ways, for example, as 4946176 + 5253264 = 2224^2 + 2292^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 10199399 and 10199408.

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, 63667 + ... + 63826.

Almost surely, 2^10199440 is an apocalyptic number.

10199440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10199440 is an abundant number, since it is smaller than the sum of its proper divisors (13514444).

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

10199440 is a wasteful number, since it uses less digits than its factorization.

10199440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127506 (or 127500 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 10199440 is about 3193.6562119301. The cubic root of 10199440 is about 216.8663195844.

The spelling of 10199440 in words is "ten million, one hundred ninety-nine thousand, four hundred forty".