40412421389 has 2 divisors, whose sum is σ = 40412421390. Its totient is φ = 40412421388.

The previous prime is 40412421353. The next prime is 40412421443. The reversal of 40412421389 is 98312421404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38773548100 + 1638873289 = 196910^2 + 40483^2 .

It is a cyclic number.

It is not a de Polignac number, because 40412421389 - 2¹² = 40412417293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40412421319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20206210694 + 20206210695.

It is an arithmetic number, because the mean of its divisors is an integer number (20206210695).

Almost surely, 2^40412421389 is an apocalyptic number.

It is an amenable number.

40412421389 is a deficient number, since it is larger than the sum of its proper divisors (1).

40412421389 is an equidigital number, since it uses as much as digits as its factorization.

40412421389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 40412421389 in words is "forty billion, four hundred twelve million, four hundred twenty-one thousand, three hundred eighty-nine".