39444745 has 8 divisors (see below), whose sum is σ = 48136320. Its totient is φ = 31020720.

The previous prime is 39444739. The next prime is 39444751. The reversal of 39444745 is 54744493.

It is an interprime number because it is at equal distance from previous prime (39444739) and next prime (39444751).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-39444745 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39444698 and 39444707.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 66561 + ... + 67150.

It is an arithmetic number, because the mean of its divisors is an integer number (6017040).

Almost surely, 2^39444745 is an apocalyptic number.

It is an amenable number.

39444745 is a deficient number, since it is larger than the sum of its proper divisors (8691575).

39444745 is a wasteful number, since it uses less digits than its factorization.

39444745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133775.

The product of its digits is 241920, while the sum is 40.

The square root of 39444745 is about 6280.5051548422. The cubic root of 39444745 is about 340.4053556342.

The spelling of 39444745 in words is "thirty-nine million, four hundred forty-four thousand, seven hundred forty-five".