38998123 has 2 divisors, whose sum is σ = 38998124. Its totient is φ = 38998122.

The previous prime is 38998081. The next prime is 38998151. The reversal of 38998123 is 32189983.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38998123 - 2²¹ = 36900971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38998123.

It is not a weakly prime, because it can be changed into another prime (38998163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19499061 + 19499062.

It is an arithmetic number, because the mean of its divisors is an integer number (19499062).

Almost surely, 2^38998123 is an apocalyptic number.

38998123 is a deficient number, since it is larger than the sum of its proper divisors (1).

38998123 is an equidigital number, since it uses as much as digits as its factorization.

38998123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 38998123 is about 6244.8477163178. The cubic root of 38998123 is about 339.1157037835.

The spelling of 38998123 in words is "thirty-eight million, nine hundred ninety-eight thousand, one hundred twenty-three".