38144393 has 18 divisors (see below), whose sum is σ = 45310554. Its totient is φ = 32015424.

The previous prime is 38144389. The next prime is 38144411. The reversal of 38144393 is 39344183.

It can be written as a sum of positive squares in only one way, i.e., 21603904 + 16540489 = 4648^2 + 4067^2 .

It is not a de Polignac number, because 38144393 - 2² = 38144389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38144383) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 337505 + ... + 337617.

It is an arithmetic number, because the mean of its divisors is an integer number (2517253).

Almost surely, 2^38144393 is an apocalyptic number.

It is an amenable number.

38144393 is a deficient number, since it is larger than the sum of its proper divisors (7166161).

38144393 is an equidigital number, since it uses as much as digits as its factorization.

38144393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 203 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 38144393 is about 6176.1147171988. The cubic root of 38144393 is about 336.6228320321.

The spelling of 38144393 in words is "thirty-eight million, one hundred forty-four thousand, three hundred ninety-three".