39445057 has 4 divisors (see below), whose sum is σ = 39755776. Its totient is φ = 39134340.

The previous prime is 39445037. The next prime is 39445073. The reversal of 39445057 is 75054493.

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 a de Polignac number, because none of the positive numbers 2^k-39445057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39445037) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 155169 + ... + 155422.

It is an arithmetic number, because the mean of its divisors is an integer number (9938944).

Almost surely, 2^39445057 is an apocalyptic number.

It is an amenable number.

39445057 is a deficient number, since it is larger than the sum of its proper divisors (310719).

39445057 is a wasteful number, since it uses less digits than its factorization.

39445057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310718.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 39445057 is about 6280.5299935595. The cubic root of 39445057 is about 340.4062531445.

It can be divided in two parts, 394 and 45057, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 39445057 in words is "thirty-nine million, four hundred forty-five thousand, fifty-seven".