39993229 has 4 divisors (see below), whose sum is σ = 40194400. Its totient is φ = 39792060.

The previous prime is 39993223. The next prime is 39993241. The reversal of 39993229 is 92239993.

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 39993229 - 2³ = 39993221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39993221) 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, 100287 + ... + 100684.

It is an arithmetic number, because the mean of its divisors is an integer number (10048600).

Almost surely, 2^39993229 is an apocalyptic number.

It is an amenable number.

39993229 is a deficient number, since it is larger than the sum of its proper divisors (201171).

39993229 is a wasteful number, since it uses less digits than its factorization.

39993229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201170.

The product of its digits is 236196, while the sum is 46.

The square root of 39993229 is about 6324.0200031309. The cubic root of 39993229 is about 341.9758911678.

The spelling of 39993229 in words is "thirty-nine million, nine hundred ninety-three thousand, two hundred twenty-nine".