38403381 has 4 divisors (see below), whose sum is σ = 51204512. Its totient is φ = 25602252.

The previous prime is 38403361. The next prime is 38403433. The reversal of 38403381 is 18330483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 38403381 - 2⁵ = 38403349 is a prime.

It is a super-2 number, since 2×38403381² = 2949639344462322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38403341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6400561 + ... + 6400566.

It is an arithmetic number, because the mean of its divisors is an integer number (12801128).

Almost surely, 2^38403381 is an apocalyptic number.

It is an amenable number.

38403381 is a deficient number, since it is larger than the sum of its proper divisors (12801131).

38403381 is a wasteful number, since it uses less digits than its factorization.

38403381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12801130.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 38403381 is about 6197.0461511917. The cubic root of 38403381 is about 337.3829673782.

The spelling of 38403381 in words is "thirty-eight million, four hundred three thousand, three hundred eighty-one".