38621413 has 4 divisors (see below), whose sum is σ = 39197920. Its totient is φ = 38044908.

The previous prime is 38621389. The next prime is 38621431. The reversal of 38621413 is 31412683.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31412683 = 41 ⋅766163.

It is a cyclic number.

It is not a de Polignac number, because 38621413 - 2¹³ = 38613221 is a prime.

It is a super-2 number, since 2×38621413² = 2983227084233138, 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 (38624413) 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, 288153 + ... + 288286.

It is an arithmetic number, because the mean of its divisors is an integer number (9799480).

Almost surely, 2^38621413 is an apocalyptic number.

It is an amenable number.

38621413 is a deficient number, since it is larger than the sum of its proper divisors (576507).

38621413 is an equidigital number, since it uses as much as digits as its factorization.

38621413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576506.

The product of its digits is 3456, while the sum is 28.

The square root of 38621413 is about 6214.6128600260. The cubic root of 38621413 is about 338.0202507620.

The spelling of 38621413 in words is "thirty-eight million, six hundred twenty-one thousand, four hundred thirteen".