39790447 has 4 divisors (see below), whose sum is σ = 40012920. Its totient is φ = 39567976.

The previous prime is 39790441. The next prime is 39790451. The reversal of 39790447 is 74409793.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 39790447 - 2¹⁹ = 39266159 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 (39790441) 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, 110968 + ... + 111325.

It is an arithmetic number, because the mean of its divisors is an integer number (10003230).

Almost surely, 2^39790447 is an apocalyptic number.

39790447 is a deficient number, since it is larger than the sum of its proper divisors (222473).

39790447 is a wasteful number, since it uses less digits than its factorization.

39790447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222472.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 39790447 is about 6307.9669466477. The cubic root of 39790447 is about 341.3969257339.

The spelling of 39790447 in words is "thirty-nine million, seven hundred ninety thousand, four hundred forty-seven".