37222009 has 4 divisors (see below), whose sum is σ = 40605840. Its totient is φ = 33838180.

The previous prime is 37221971. The next prime is 37222013. The reversal of 37222009 is 90022273.

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: 90022273 = 11 ⋅8183843.

It is a cyclic number.

It is not a de Polignac number, because 37222009 - 2²³ = 28833401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (37222039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691899 + ... + 1691920.

It is an arithmetic number, because the mean of its divisors is an integer number (10151460).

Almost surely, 2^37222009 is an apocalyptic number.

It is an amenable number.

37222009 is a deficient number, since it is larger than the sum of its proper divisors (3383831).

37222009 is a wasteful number, since it uses less digits than its factorization.

37222009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383830.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 37222009 is about 6100.9842648543. The cubic root of 37222009 is about 333.8873279819.

The spelling of 37222009 in words is "thirty-seven million, two hundred twenty-two thousand, nine".