37243993 has 4 divisors (see below), whose sum is σ = 37452240. Its totient is φ = 37035748.

The previous prime is 37243981. The next prime is 37244017. The reversal of 37243993 is 39934273.

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 37243993 - 2⁵ = 37243961 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37243963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103855 + ... + 104212.

It is an arithmetic number, because the mean of its divisors is an integer number (9363060).

Almost surely, 2^37243993 is an apocalyptic number.

It is an amenable number.

37243993 is a deficient number, since it is larger than the sum of its proper divisors (208247).

37243993 is a wasteful number, since it uses less digits than its factorization.

37243993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208246.

The product of its digits is 122472, while the sum is 40.

The square root of 37243993 is about 6102.7856754109. The cubic root of 37243993 is about 333.9530483681.

The spelling of 37243993 in words is "thirty-seven million, two hundred forty-three thousand, nine hundred ninety-three".