1396444025 has 24 divisors (see below), whose sum is σ = 1797515904. Its totient is φ = 1075406400.

The previous prime is 1396444009. The next prime is 1396444031. The reversal of 1396444025 is 5204446931.

It is not a de Polignac number, because 1396444025 - 2⁴ = 1396444009 is a prime.

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 1396444025.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61934 + ... + 81416.

It is an arithmetic number, because the mean of its divisors is an integer number (74896496).

Almost surely, 2^1396444025 is an apocalyptic number.

It is an amenable number.

1396444025 is a deficient number, since it is larger than the sum of its proper divisors (401071879).

1396444025 is a wasteful number, since it uses less digits than its factorization.

1396444025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19601 (or 19596 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 1396444025 is about 37369.0249404503. The cubic root of 1396444025 is about 1117.7409890545.

The spelling of 1396444025 in words is "one billion, three hundred ninety-six million, four hundred forty-four thousand, twenty-five".