39223709 has 16 divisors (see below), whose sum is σ = 48480768. Its totient is φ = 30964992.

The previous prime is 39223699. The next prime is 39223741. The reversal of 39223709 is 90732293.

It is a cyclic number.

It is not a de Polignac number, because 39223709 - 2²⁰ = 38175133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39223799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2087 + ... + 9099.

It is an arithmetic number, because the mean of its divisors is an integer number (3030048).

Almost surely, 2^39223709 is an apocalyptic number.

It is an amenable number.

39223709 is a deficient number, since it is larger than the sum of its proper divisors (9257059).

39223709 is a wasteful number, since it uses less digits than its factorization.

39223709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7084.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 39223709 is about 6262.8834413551. The cubic root of 39223709 is about 339.7683225620.

The spelling of 39223709 in words is "thirty-nine million, two hundred twenty-three thousand, seven hundred nine".