38421609 has 4 divisors (see below), whose sum is σ = 51228816. Its totient is φ = 25614404.

The previous prime is 38421601. The next prime is 38421631. The reversal of 38421609 is 90612483.

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 a cyclic number.

It is not a de Polignac number, because 38421609 - 2³ = 38421601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38421609.

It is not an unprimeable number, because it can be changed into a prime (38421601) 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, 6403599 + ... + 6403604.

It is an arithmetic number, because the mean of its divisors is an integer number (12807204).

Almost surely, 2^38421609 is an apocalyptic number.

It is an amenable number.

38421609 is a deficient number, since it is larger than the sum of its proper divisors (12807207).

38421609 is a wasteful number, since it uses less digits than its factorization.

38421609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12807206.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 38421609 is about 6198.5166773995. The cubic root of 38421609 is about 337.4363380609.

The spelling of 38421609 in words is "thirty-eight million, four hundred twenty-one thousand, six hundred nine".