40215000389 has 2 divisors, whose sum is σ = 40215000390. Its totient is φ = 40215000388.

The previous prime is 40215000289. The next prime is 40215000407. The reversal of 40215000389 is 98300051204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31609284100 + 8605716289 = 177790^2 + 92767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40215000389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40215000289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20107500194 + 20107500195.

It is an arithmetic number, because the mean of its divisors is an integer number (20107500195).

Almost surely, 2^40215000389 is an apocalyptic number.

It is an amenable number.

40215000389 is a deficient number, since it is larger than the sum of its proper divisors (1).

40215000389 is an equidigital number, since it uses as much as digits as its factorization.

40215000389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 40215000389 in words is "forty billion, two hundred fifteen million, three hundred eighty-nine", and thus it is an aban number.