44978429393 has 2 divisors, whose sum is σ = 44978429394. Its totient is φ = 44978429392.

The previous prime is 44978429381. The next prime is 44978429417. The reversal of 44978429393 is 39392487944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22839370129 + 22139059264 = 151127^2 + 148792^2 .

It is a cyclic number.

It is not a de Polignac number, because 44978429393 - 2¹⁴ = 44978413009 is a prime.

It is a super-2 number, since 2×44978429393² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44978429323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22489214696 + 22489214697.

It is an arithmetic number, because the mean of its divisors is an integer number (22489214697).

Almost surely, 2^44978429393 is an apocalyptic number.

It is an amenable number.

44978429393 is a deficient number, since it is larger than the sum of its proper divisors (1).

44978429393 is an equidigital number, since it uses as much as digits as its factorization.

44978429393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47029248, while the sum is 62.

The spelling of 44978429393 in words is "forty-four billion, nine hundred seventy-eight million, four hundred twenty-nine thousand, three hundred ninety-three".