38886963421 has 2 divisors, whose sum is σ = 38886963422. Its totient is φ = 38886963420.

The previous prime is 38886963403. The next prime is 38886963449. The reversal of 38886963421 is 12436968883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36284535225 + 2602428196 = 190485^2 + 51014^2 .

It is a cyclic number.

It is not a de Polignac number, because 38886963421 - 2⁵ = 38886963389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38886963461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19443481710 + 19443481711.

It is an arithmetic number, because the mean of its divisors is an integer number (19443481711).

Almost surely, 2^38886963421 is an apocalyptic number.

It is an amenable number.

38886963421 is a deficient number, since it is larger than the sum of its proper divisors (1).

38886963421 is an equidigital number, since it uses as much as digits as its factorization.

38886963421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11943936, while the sum is 58.

The spelling of 38886963421 in words is "thirty-eight billion, eight hundred eighty-six million, nine hundred sixty-three thousand, four hundred twenty-one".