39120229 has 4 divisors (see below), whose sum is σ = 39507660. Its totient is φ = 38732800.

The previous prime is 39120203. The next prime is 39120253. The reversal of 39120229 is 92202193.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26884225 + 12236004 = 5185^2 + 3498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39120229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39120197 and 39120206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39120269) 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, 193564 + ... + 193765.

It is an arithmetic number, because the mean of its divisors is an integer number (9876915).

Almost surely, 2^39120229 is an apocalyptic number.

It is an amenable number.

39120229 is a deficient number, since it is larger than the sum of its proper divisors (387431).

39120229 is a wasteful number, since it uses less digits than its factorization.

39120229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387430.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 39120229 is about 6254.6166149493. The cubic root of 39120229 is about 339.4692671239.

The spelling of 39120229 in words is "thirty-nine million, one hundred twenty thousand, two hundred twenty-nine".