440021052293 has 2 divisors, whose sum is σ = 440021052294. Its totient is φ = 440021052292.

The previous prime is 440021052167. The next prime is 440021052319. The reversal of 440021052293 is 392250120044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310318071844 + 129702980449 = 557062^2 + 360143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440021052293 is a prime.

It is a super-2 number, since 2×440021052293² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440021057293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220010526146 + 220010526147.

It is an arithmetic number, because the mean of its divisors is an integer number (220010526147).

Almost surely, 2^440021052293 is an apocalyptic number.

It is an amenable number.

440021052293 is a deficient number, since it is larger than the sum of its proper divisors (1).

440021052293 is an equidigital number, since it uses as much as digits as its factorization.

440021052293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 440021052293 in words is "four hundred forty billion, twenty-one million, fifty-two thousand, two hundred ninety-three".