38993919 has 8 divisors (see below), whose sum is σ = 52184832. Its totient is φ = 25899480.

The previous prime is 38993917. The next prime is 38993921. The reversal of 38993919 is 91939983.

It is an interprime number because it is at equal distance from previous prime (38993917) and next prime (38993921).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38993919 - 2¹ = 38993917 is a prime.

It is a super-2 number, since 2×38993919² = 3041051437957122, which contains 22 as substring.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38993917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23169 + ... + 24794.

It is an arithmetic number, because the mean of its divisors is an integer number (6523104).

Almost surely, 2^38993919 is an apocalyptic number.

38993919 is a deficient number, since it is larger than the sum of its proper divisors (13190913).

38993919 is a wasteful number, since it uses less digits than its factorization.

38993919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48237.

The product of its digits is 472392, while the sum is 51.

The square root of 38993919 is about 6244.5111097667. The cubic root of 38993919 is about 339.1035177812.

The spelling of 38993919 in words is "thirty-eight million, nine hundred ninety-three thousand, nine hundred nineteen".