38214509 has 4 divisors (see below), whose sum is σ = 38301216. Its totient is φ = 38127804.

The previous prime is 38214493. The next prime is 38214541. The reversal of 38214509 is 90541283.

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: 90541283 = 7 ⋅12934469.

It is a cyclic number.

It is not a de Polignac number, because 38214509 - 2⁴ = 38214493 is a prime.

It is a super-2 number, since 2×38214509² = 2920697396222162, 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 (38219509) 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, 42689 + ... + 43574.

It is an arithmetic number, because the mean of its divisors is an integer number (9575304).

Almost surely, 2^38214509 is an apocalyptic number.

It is an amenable number.

38214509 is a deficient number, since it is larger than the sum of its proper divisors (86707).

38214509 is an equidigital number, since it uses as much as digits as its factorization.

38214509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86706.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 38214509 is about 6181.7884952496. The cubic root of 38214509 is about 336.8289628023.

The spelling of 38214509 in words is "thirty-eight million, two hundred fourteen thousand, five hundred nine".