444121121407 has 2 divisors, whose sum is σ = 444121121408. Its totient is φ = 444121121406.

The previous prime is 444121121369. The next prime is 444121121419. The reversal of 444121121407 is 704121121444.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444121121407 is a prime.

It is a super-2 number, since 2×444121121407² (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 (444121121447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222060560703 + 222060560704.

It is an arithmetic number, because the mean of its divisors is an integer number (222060560704).

Almost surely, 2^444121121407 is an apocalyptic number.

444121121407 is a deficient number, since it is larger than the sum of its proper divisors (1).

444121121407 is an equidigital number, since it uses as much as digits as its factorization.

444121121407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 31.

The spelling of 444121121407 in words is "four hundred forty-four billion, one hundred twenty-one million, one hundred twenty-one thousand, four hundred seven".