444897798407 has 2 divisors, whose sum is σ = 444897798408. Its totient is φ = 444897798406.

The previous prime is 444897798347. The next prime is 444897798463. The reversal of 444897798407 is 704897798444.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 444897798407 - 2¹² = 444897794311 is a prime.

It is a super-2 number, since 2×444897798407² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444897798487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222448899203 + 222448899204.

It is an arithmetic number, because the mean of its divisors is an integer number (222448899204).

Almost surely, 2^444897798407 is an apocalyptic number.

444897798407 is a deficient number, since it is larger than the sum of its proper divisors (1).

444897798407 is an equidigital number, since it uses as much as digits as its factorization.

444897798407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 455196672, while the sum is 71.

The spelling of 444897798407 in words is "four hundred forty-four billion, eight hundred ninety-seven million, seven hundred ninety-eight thousand, four hundred seven".