40506060389 has 2 divisors, whose sum is σ = 40506060390. Its totient is φ = 40506060388.

The previous prime is 40506060383. The next prime is 40506060443. The reversal of 40506060389 is 98306060504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38409336289 + 2096724100 = 195983^2 + 45790^2 .

It is a cyclic number.

It is not a de Polignac number, because 40506060389 - 2⁴ = 40506060373 is a prime.

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 (40506060383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20253030194 + 20253030195.

It is an arithmetic number, because the mean of its divisors is an integer number (20253030195).

Almost surely, 2^40506060389 is an apocalyptic number.

It is an amenable number.

40506060389 is a deficient number, since it is larger than the sum of its proper divisors (1).

40506060389 is an equidigital number, since it uses as much as digits as its factorization.

40506060389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 40506060389 in words is "forty billion, five hundred six million, sixty thousand, three hundred eighty-nine".