440694225 has 18 divisors (see below), whose sum is σ = 789332726. Its totient is φ = 235036800.

The previous prime is 440694203. The next prime is 440694239. The reversal of 440694225 is 522496044.

It can be written as a sum of positive squares in 3 ways, for example, as 7096896 + 433597329 = 2664^2 + 20823^2 .

It is not a de Polignac number, because 440694225 - 2⁵ = 440694193 is a prime.

It is a super-2 number, since 2×440694225² = 388422799896701250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440694225.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 979096 + ... + 979545.

Almost surely, 2^440694225 is an apocalyptic number.

440694225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

440694225 is a deficient number, since it is larger than the sum of its proper divisors (348638501).

440694225 is a wasteful number, since it uses less digits than its factorization.

440694225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958657 (or 1958649 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 440694225 is about 20992.7183804290. The cubic root of 440694225 is about 760.9902978163.

The spelling of 440694225 in words is "four hundred forty million, six hundred ninety-four thousand, two hundred twenty-five".